fix compatibility with distro using python3 to run agent and do some minor fix

TestLibs/RDFELibs.psm1

@@ -2290,7 +2290,7 @@ Function DoTestCleanUp($result, $testName, $DeployedServices, $ResourceGroups, [
 							LogMsg "Cleaning up deployed test virtual machines."
 							$isClened = DeleteResourceGroup -RGName $group
 						
-							if ($isClened)
+							if (!$isClened)
 							{
 								LogMsg "CleanUP unsuccessful for $group.. Please delete the services manually."
 							}

remote-scripts/BVT-WA-VER-CHECK.py

@@ -32,5 +32,9 @@ def RunTest(command):
 
 if(distro == "COREOS"):
     RunTest("waagent --version")
+else:
+    output = Run("ps aux | grep waagent | grep python | grep -v 'ps aux | grep waagent | grep python'")
+    if ("python3" in output) :
+        RunTest("/usr/bin/python3 /usr/sbin/waagent --version")
     else :
         RunTest("/usr/sbin/waagent --version")