Merge release branch 4.8 to master

* 4.8:
  writeIfNotHere requires an array of strings, not a string

scripts/network/ping/baremetal_user_data.py

@@ -93,7 +93,7 @@ def addUserData(vmIp, folder, fileName, contents):
     f.close()
     
     if folder == "metadata" or folder == "meta-data":
-        writeIfNotHere(metaManifest, fileName)
+        writeIfNotHere(metaManifest, [fileName])
 
 if __name__ == '__main__':
     string = sys.argv[1]