IsBuild variable

This shows if we are running the build job or the test job

Author: aminya

script/vsts/platforms/linux.yml

@@ -4,6 +4,7 @@ jobs:
     timeoutInMinutes: 180
     variables:
       ReleaseVersion: $[ dependencies.GetReleaseVersion.outputs['Version.ReleaseVersion'] ]
+      IsBuild: true
     pool:
       vmImage: ubuntu-16.04
 

script/vsts/platforms/macos.yml

@@ -9,6 +9,7 @@ jobs:
       IsReleaseBranch: $[ dependencies.GetReleaseVersion.outputs['Version.IsReleaseBranch'] ]
       IsSignedZipBranch: $[ dependencies.GetReleaseVersion.outputs['Version.IsSignedZipBranch'] ]
       RunCoreMainTests: true
+      IsBuild: true
     pool:
       vmImage: macos-10.15
 

script/vsts/platforms/windows.yml

@@ -21,6 +21,7 @@ jobs:
       ReleaseVersion: $[ dependencies.GetReleaseVersion.outputs['Version.ReleaseVersion'] ]
       IsReleaseBranch: $[ dependencies.GetReleaseVersion.outputs['Version.IsReleaseBranch'] ]
       IsSignedZipBranch: $[ dependencies.GetReleaseVersion.outputs['Version.IsSignedZipBranch'] ]
+      IsBuild: true
 
     steps:
       - template: templates/preparation.yml