LAVA master image scripts

Merge proposals dependent on lp://qastaging/~dpigott/lava-master-image-scripts/re-baseline-to-13-03-release

  1. re-baseline-to-13-03-release
  2. Dependent merge proposals

lp://qastaging/~dpigott/lava-master-image-scripts/re-baseline-to-13-03-release has no merge proposals.