Updating the skus names and clarified capacity description

[liatbezalel]

This change include:

1. Aligning and adding new SKUs names. (We have backward compatibility to the old names).
2. Adding "Basic" tier.
3. Clarified capacity description.

Latest improvements:

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[AutorestCI]

Automation for azure-sdk-for-js

Nothing to generate for azure-sdk-for-js

[AutorestCI]

Automation for azure-sdk-for-ruby

Nothing to generate for azure-sdk-for-ruby

[AutorestCI]

Automation for azure-sdk-for-python

The initial PR has been merged into your service PR:
Azure/azure-sdk-for-python#6755

[AutorestCI]

Automation for azure-sdk-for-java

Encountered a Subprocess error: (azure-sdk-for-java)

Command: ['/usr/local/bin/autorest', '/tmp/tmp7l8lj_hh/rest/specification/azure-kusto/resource-manager/readme.md', '--perform-load=false', '--swagger-to-sdk', '--output-artifact=configuration.json', '--input-file=foo', '--output-folder=/tmp/tmpgos6v853']
Finished with return code 7
and output:

AutoRest code generation utility [version: 2.0.4283; node: v8.12.0]
(C) 2018 Microsoft Corporation.
https://aka.ms/autorest
Failure:
Error: Unable to start AutoRest Core from /root/.autorest/@microsoft.azure_autorest-core@2.0.4373/node_modules/@microsoft.azure/autorest-core
Error: Unable to start AutoRest Core from /root/.autorest/@microsoft.azure_autorest-core@2.0.4373/node_modules/@microsoft.azure/autorest-core
    at main (/opt/node_modules/autorest/dist/app.js:232:19)
    at <anonymous>

/root/.autorest/@microsoft.azure_autorest-core@2.0.4373/node_modules/@microsoft.azure/autorest-core/dist/app.js:33
    autorest_core_1.Shutdown();
    ^
ReferenceError: autorest_core_1 is not defined
    at process.on (/root/.autorest/@microsoft.azure_autorest-core@2.0.4373/node_modules/@microsoft.azure/autorest-core/dist/app.js:33:5)
    at emitOne (events.js:121:20)
    at process.emit (events.js:211:7)
    at process.emit (/node_modules/source-map-support/source-map-support.js:439:21)
fs.js:612
  return binding.close(fd);
                 ^

Error: EBADF: bad file descriptor, close
    at Object.fs.closeSync (fs.js:612:18)
    at StaticVolumeFile.shutdown (/opt/node_modules/autorest/dist/static-loader.js:352:10)
    at StaticFilesystem.shutdown (/opt/node_modules/autorest/dist/static-loader.js:406:17)
    at process.exit.n [as exit] (/opt/node_modules/autorest/dist/static-loader.js:169:11)
    at printErrorAndExit (/node_modules/source-map-support/source-map-support.js:423:11)
    at process.emit (/node_modules/source-map-support/source-map-support.js:435:16)
    at process._fatalException (bootstrap_node.js:391:26)

[AutorestCI]

Automation for azure-sdk-for-go

A PR has been created for you based on this PR content.

Once this PR will be merged, content will be added to your service PR:
Azure/azure-sdk-for-go#5490

[azuresdkci]

Can one of the admins verify this patch?

[shahabhijeet]

Breaking change on stable API, needs ARM signoff

[PhoenixHe-NV]

@OpenAPIBot sdkautomation rebuild

[openapi-sdkautomation]

In Testing, Please Ignore

[Logs] (Generated from 408cd70, Iteration 1)

Python: test-repo-billy/azure-sdk-for-python [Logs] [Diff]

• azure-mgmt-kusto [Logs] [Instructions] [Generation PR]
  • azure-mgmt-kusto-0.3.0.zip
  • azure_mgmt_kusto-0.3.0-py2.py3-none-any.whl

Go: test-repo-billy/azure-sdk-for-go [Logs] [Diff]

• kusto/mgmt/2019-01-21 [Logs] [Instructions] [Generation PR]
  • kusto.mgmt.2019-01-21.zip
• preview/kusto/mgmt/2018-09-07-preview [Logs]

Java: test-repo-billy/azure-sdk-for-java [Logs] [Diff]

• kusto/resource-manager/v2018_09_07_preview [Logs]
• kusto/resource-manager/v2019_01_21 [Logs]

[mmyyrroonn]

LGTM. Wait for ARM feedback

[ryansbenson]

Approved from ARMs side

[mmyyrroonn]

@shahabhijeet Could you please approve this PR?