Merge pull request Azure#3480 from cormacpayne/release-3.5.0

[Release-3.5.0] Update module version for Compute

Merge pull request Azure#3396 from cormacpayne/release-3.4.0

[Release 3.4.0] Update change logs and psd1 files for release

Merge pull request Azure#3396 from cormacpayne/release-3.4.0

[Release 3.4.0] Update change logs and psd1 files for release

Updating ChangeLog.md for the release 1.2.8 (Azure#3378)

Signed build from Azure Stack release branch

Updating Nuget.exe that is supported on Test Gallery (Azure#3290)

* Updating Nuget.exe that is supported on Test Gallery
* Adding signed copy of nuget.exe 3.4.4.1321 that is currently being used by PS branch
* adding nuget feed into build.proj. Adding diagnostic logs to PublishModule.ps1
* Updating nuget package restore directory for product and test
* Updating packages paths for tests
* Repacking after updating signed nuget package by adding psm1 dependency to the module. If not done, Test Gallyer/PS Gallery will fail to accept the package when try to push the nuget package as the package contents have changed after signing it
* Updating the copy of nuget exe that would repack nuget during build process. Test Gallery is still v2 based, hence will not accept any other version of nuget.exe while pushing/publishing it to Test Gallery.
* Adding more logging in publish module. Adding null check for unregistering Repositories at the end of PublishModule

Signed build from Azure Stack release branch

Signed build from Azure Stack release branch

Signed build from Azure Stack release branch

Signed build from Azure Stack release branch