Fix validation on PR build to end-to-end test script for BCApps (#2042)

BCApps test is failing because the number of projects there keeps
changing.

Make the test a bit more generic to avoid having to change it often.

Author: mazhelez

e2eTests/scenarios/BCApps/runtest.ps1

@@ -125,10 +125,12 @@ if (-not $run) {
 }
 WaitWorkflow -repository $repository -runid $run.id
 
-# There should be only 1 app rebuilt
+# There should be at least 1 app and 1 test app rebuilt
 Test-ArtifactsFromRun -runid $run.id -folder '.prartifacts' -repoVersion '*.*' -appVersion '*.*'
 $appCount = @(Get-ChildItem -Path '.prartifacts/*-Apps-*/*.app'  -Recurse).Count
-$appCount | Should -Be 1
+$testAppCount = @(Get-ChildItem -Path '.prartifacts/*-TestApps-*/*.app'  -Recurse).Count
+$appCount | Should -BeGreaterThan 0
+$testAppCount | Should -BeGreaterThan 0
 
 Pop-Location
 RemoveRepository -repository $repository -path $repoPath