CLOUD-925 | Improvement: Ensure local commit of source before clone so layers are shared for Anka 3.0

[NorseGaud]

Starting in Anka 3.0, sharing of the underlying ank images does not happen if there is no local commit (tag) for the source VM. We need to modify the code so that it:

• check for an already existing tag on the source VM
  • IF a tag exists, proceed with the normal clone process
  • IF a tag DOES NOT exist, tag the source VM and then proceed with a normal clone process
    • Remove the tag from the source VM if it fails or is successful