[release-1.0] Add version alias support (#566)

[luksa]

• Refactor version management to use new istioversions package

• Moved supportedversion into pkg/istioversions
• Embeded versions.yaml into the binary
• Updated Makefile and scripts to reference the new versions.yaml location in pkg/istioversions.
• Replaced instances of supportedversion with istioversions in various controller tests and integration tests.

• Add alias support in istioversions

• Introduce alias in the controller

• Fix tests for alias

• Fix version value format

• Add comments to pkg/istioversions/versions.go

• Support for different versions YAML files

• Automatically update aliases

• Remove 'latest' and create an alias called 'master'

• Include alias as part of the installation tests

• Update tests

• Resolve version name for IstioCNI and ZTunnel

• Update tests

• Update types validation

• Apply suggestions in the reviews

• Change 'alias' to 'aliases' in version.yaml

• Skip sample pod specs when running under an alias version

• Make consistent naming

• Fix test style

• Change version.yaml structure

• Update tests and rename

• Fix tests

• Remove version alias in IstioRevision

• Fix a test

The error was "no namespace specified" and the reconciliation of the active revision path was never entered. A namespace is added into the spec and the error in the reconcileActiveRevision path is triggered.

• Fix a rebase error

• Update field name to use ref

• Simplify versions.yaml loading logic

• Lint

• Fix list_only_latest() func

• Introduce VERSIONS_YAML_PATH

• Rename to istioversion

• Reword error message

• Fix update_alias()

• Update package path references

• Fix import error

• Update versions.yaml definition

In versions.yaml, Ref is now a reference to the name of a version.

[codecov]

Codecov Report

Attention: Patch coverage is 78.57143% with 15 lines in your changes missing coverage. Please review.

Project coverage is 74.30%. Comparing base (8ded98d) to head (670c522).
Report is 1 commits behind head on release-1.0.

Files with missing lines	Patch %	Lines
controllers/ztunnel/ztunnel_controller.go	0.00%	10 Missing ⚠️
controllers/istiocni/istiocni_controller.go	72.72%	2 Missing and 1 partial ⚠️
pkg/istioversion/version.go	95.34%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@               Coverage Diff               @@
##           release-1.0     #662      +/-   ##
===============================================
- Coverage        74.44%   74.30%   -0.14%     
===============================================
  Files               42       42              
  Lines             2559     2584      +25     
===============================================
+ Hits              1905     1920      +15     
- Misses             562      570       +8     
- Partials            92       94       +2     

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[yannuil]

LGTM