V2 Changelog: adding fragments for visible changes

[pierrehilbert]

What does this PR do?

Prepare fragments for the v2 changelog: only includes changes visible by our users.

Why is it important?

Allow our users to know what has changed.

Checklist

• I have made corresponding changes to the documentation
• I have added an entry in ./changelog/fragments using the changelog tool

How to test this PR locally

elastic-agent-changelog-tool build --version=next --owner elastic --repo elastic-agent
elastic-agent-changelog-tool render --version=next

Related issues

Relates #1687

[elasticmachine]

💔 Tests Failed

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Build stats

• Start Time: 2023-01-09T22:00:25.585+0000

• Duration: 16 min 46 sec

Test stats 🧪

Test	Results
Failed	1
Passed	4820
Skipped	13
Total	4834

Test errors

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Test / Matrix - PLATFORM = 'ubuntu-20.04 && immutable' / Test / TestManager_FakeShipper – github.com/elastic/elastic-agent/pkg/component/runtime

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 Failed 

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 === RUN   TestManager_FakeShipper
    manager_test.go:1963: component state changed: {State:STARTING Message:Starting: spawned pid '38614' Units:map[{UnitType:input UnitID:fake-input}:{State:STARTING Message:Starting: spawned pid '38614' Payload:map[] unitState:0 unitMessage:Starting unitPayload:map[] configStateIdx:0 err:<nil>} {UnitType:output UnitID:fake-default}:{State:STARTING Message:Starting: spawned pid '38614' Payload:map[] unitState:0 unitMessage:Starting unitPayload:map[] configStateIdx:0 err:<nil>}] VersionInfo:{Name: Version: Meta:map[]} expectedUnits:map[{UnitType:0 UnitID:fake-input}:{state:2 configStateIdx:1 config:0xc000574c60 err:<nil> logLevel:4} {UnitType:1 UnitID:fake-default}:{state:2 configStateIdx:1 config:0xc0005745a0 err:<nil> logLevel:4}]}
    manager_test.go:1928: shipper state changed: {State:STARTING Message:Starting: spawned pid '38726' Units:map[{UnitType:input UnitID:fake-default}:{State:STARTING Message:Starting: spawned pid '38726' Payload:map[] unitState:0 unitMessage:Starting unitPayload:map[] configStateIdx:0 err:<nil>} {UnitType:output UnitID:fake-default}:{State:STARTING Message:Starting: spawned pid '38726' Payload:map[] unitState:0 unitMessage:Starting unitPayload:map[] configStateIdx:0 err:<nil>}] VersionInfo:{Name: Version: Meta:map[]} expectedUnits:map[{UnitType:0 UnitID:fake-default}:{state:2 configStateIdx:1 config:0xc0005743f0 err:<nil> logLevel:4} {UnitType:1 UnitID:fake-default}:{state:2 configStateIdx:1 config:0xc000574e10 err:<nil> logLevel:4}]}
    manager_test.go:1963: component state changed: {State:HEALTHY Message:Healthy: communicating with pid '38614' Units:map[{UnitType:input UnitID:fake-input}:{State:STARTING Message:Starting: spawned pid '38614' Payload:map[] unitState:0 unitMessage: unitPayload:map[] configStateIdx:0 err:<nil>} {UnitType:output UnitID:fake-default}:{State:STARTING Message:Starting: spawned pid '38614' Payload:map[] unitState:0 unitMessage: unitPayload:map[] configStateIdx:0 err:<nil>}] VersionInfo:{Name:fake Version:1.0 Meta:map[input:fake]} expectedUnits:map[{UnitType:0 UnitID:fake-input}:{state:2 configStateIdx:1 config:0xc000574c60 err:<nil> logLevel:4} {UnitType:1 UnitID:fake-default}:{state:2 configStateIdx:1 config:0xc0005745a0 err:<nil> logLevel:4}]}
    manager_test.go:1963: component state changed: {State:HEALTHY Message:Healthy: communicating with pid '38614' Units:map[{UnitType:input UnitID:fake-input}:{State:HEALTHY Message:Fake Healthy Payload:map[] unitState:2 unitMessage:Fake Healthy unitPayload:map[] configStateIdx:1 err:<nil>} {UnitType:output UnitID:fake-default}:{State:HEALTHY Message:GRPC fake event pipe connected "unix:///tmp/at-1603770169/tmp/elastic-agent-fake-shipper-default-pipe.sock" Payload:map[] unitState:2 unitMessage:GRPC fake event pipe connected "unix:///tmp/at-1603770169/tmp/elastic-agent-fake-shipper-default-pipe.sock" unitPayload:map[] configStateIdx:1 err:<nil>}] VersionInfo:{Name:fake Version:1.0 Meta:map[input:fake]} expectedUnits:map[{UnitType:0 UnitID:fake-input}:{state:2 configStateIdx:1 config:0xc000574c60 err:<nil> logLevel:4} {UnitType:1 UnitID:fake-default}:{state:2 configStateIdx:1 config:0xc0005745a0 err:<nil> logLevel:4}]}
    manager_test.go:1928: shipper state changed: {State:HEALTHY Message:Healthy: communicating with pid '38726' Units:map[{UnitType:input UnitID:fake-default}:{State:STARTING Message:Starting: spawned pid '38726' Payload:map[] unitState:0 unitMessage: unitPayload:map[] configStateIdx:0 err:<nil>} {UnitType:output UnitID:fake-default}:{State:STARTING Message:Starting: spawned pid '38726' Payload:map[] unitState:0 unitMessage: unitPayload:map[] configStateIdx:0 err:<nil>}] VersionInfo:{Name:fake-shipper Version:1.0 Meta:map[shipper:fake-shipper]} expectedUnits:map[{UnitType:0 UnitID:fake-default}:{state:2 configStateIdx:1 config:0xc0005743f0 err:<nil> logLevel:4} {UnitType:1 UnitID:fake-default}:{state:2 configStateIdx:1 config:0xc000574e10 err:<nil> logLevel:4}]}
    manager_test.go:1928: shipper state changed: {State:HEALTHY Message:Healthy: communicating with pid '38726' Units:map[{UnitType:input UnitID:fake-default}:{State:HEALTHY Message:Healthy Payload:map[] unitState:2 unitMessage:Healthy unitPayload:map[] configStateIdx:1 err:<nil>} {UnitType:output UnitID:fake-default}:{State:STARTING Message:Starting Payload:map[] unitState:0 unitMessage:Starting unitPayload:map[] configStateIdx:1 err:<nil>}] VersionInfo:{Name:fake-shipper Version:1.0 Meta:map[shipper:fake-shipper]} expectedUnits:map[{UnitType:0 UnitID:fake-default}:{state:2 configStateIdx:1 config:0xc0005743f0 err:<nil> logLevel:4} {UnitType:1 UnitID:fake-default}:{state:2 configStateIdx:1 config:0xc000574e10 err:<nil> logLevel:4}]}
    manager_test.go:1928: shipper state changed: {State:HEALTHY Message:Healthy: communicating with pid '38726' Units:map[{UnitType:input UnitID:fake-default}:{State:HEALTHY Message:Healthy Payload:map[] unitState:2 unitMessage:Healthy unitPayload:map[] configStateIdx:1 err:<nil>} {UnitType:output UnitID:fake-default}:{State:HEALTHY Message:Healthy Payload:map[] unitState:2 unitMessage:Healthy unitPayload:map[] configStateIdx:1 err:<nil>}] VersionInfo:{Name:fake-shipper Version:1.0 Meta:map[shipper:fake-shipper]} expectedUnits:map[{UnitType:0 UnitID:fake-default}:{state:2 configStateIdx:1 config:0xc0005743f0 err:<nil> logLevel:4} {UnitType:1 UnitID:fake-default}:{state:2 configStateIdx:1 config:0xc000574e10 err:<nil> logLevel:4}]}
    manager_test.go:2024: 
        	Error Trace:	manager_test.go:2024
        	Error:      	Received unexpected error:
        	            	action undefined
        	Test:       	TestManager_FakeShipper
--- FAIL: TestManager_FakeShipper (5.28s)
 

Steps errors

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Go unitTest

• Took 2 min 57 sec . View more details here
• Description: mage unitTest

Publish Cobertura Coverage Report

• Took 0 min 1 sec . View more details here
• Description: [2023-01-09T22:09:25.085Z] [Cobertura] Publishing Cobertura coverage report... [2023-01-09T22:09:25

🐛 Flaky test report

❕ There are test failures but not known flaky tests.

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Genuine test errors

💔 There are test failures but not known flaky tests, most likely a genuine test failure.

• Name: Test / Matrix - PLATFORM = 'ubuntu-20.04 && immutable' / Test / TestManager_FakeShipper – github.com/elastic/elastic-agent/pkg/component/runtime

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[elasticmachine]

🌐 Coverage report

Name	Metrics % (covered/total)	Diff
Packages	98.305% (58/59)	👍
Files	69.268% (142/205)	👍
Classes	69.231% (270/390)	👍
Methods	54.047% (828/1532)	👍
Lines	39.273% (9008/22937)	👍 0.004
Conditionals	100.0% (0/0)	💚

[cmacknz]

/test

[cmacknz]

The test failure here is a known flaky test and can be ignored.