dotnet-install.sh updated (microsoft#3786)

Add dotnet 2.1 installation before signing (microsoft#3766)

* Add dotnet 2.1 installation before signing

* Fix mapping

* Fix version

Update powershell version of dotmet install script (microsoft#3746)

Update error message on PR changes microsoft#3738 (microsoft#3741)

* Change error message

Changed image for stage Windows (x86) to windows-2019 (microsoft#3734)

release 2.198.2

Prepare release 2.198.1 (microsoft#3707)

* fix agentversion, releasenote for hotfix 2.198.1

* [TEE download and removal logic] Fix permissions setting on MacOS (microsoft#3704)

* fix setting permissions on macos

* chmod argument order should be different on macos

* cleanup on each download/extraction attempt

* Update dumping waagent.conf file logic not to write waning on missed "waagent.conf"

Co-authored-by: Daniil Shmelev <72494759+DaniilShmelev@users.noreply.github.com>

Co-authored-by: Tatyana Kostromskaya <86476103+tatyana-kostromskaya@users.noreply.github.com>

[macOS] Return the correct minor version on 11 and later OS. (microso…

…ft#3605)

* [macOS] Return the correct minor version on 11 and later OS.

The OS returned from 11.0 and later is:

11.* = 20.6.0.0
12.* - 21.2.0.0

The minor in those versions is correct. This fix ensures that Agent
capabilities can match the minor version too.

Co-authored-by: Alexander Smolyakov <v-alsmo@microsoft.com>
Co-authored-by: Anatoly Bolshakov <anatoly.bolshakov@akvelon.com>

Patch for Agent v2.196.1 - Removing of changing source directory if I…

…t already exists and adding of tests for this (microsoft#3676)

* Removed changing source directory if It already exists (microsoft#3654)

Co-authored-by: Nikita Ezzhev <v-niezz@microsoft.com>

* Added L0 tests for TrackingManager - MergeTrackingConfigs method (microsoft#3675)

* Added test for tracking config - merge

* Moved agent knob out of mergeTrackingConfig method to increase testability. Added tests for other cases

* Updated release notes and version for patched version

Co-authored-by: Ivan Golubev <ivan.golubev@akvelon.com>
Co-authored-by: Nikita Ezzhev <v-niezz@microsoft.com>
Co-authored-by: Anatoly Bolshakov <anatoly.bolshakov@akvelon.com>

Remove signing for third party libraries in agent release flow (micro…

…soft#3611)