Add OFFLINE_XTESTING_FILE in metadata files

This commit adds OFFLINE_XTESTING_FILE variable in change and release metadata file
to use in executing offline test.

Change-Id: Id4ab9b6732a5df4013807d6706f41cc5ee9ff15c
2 files changed
tree: f4a5d0b5542b4997e06ba30aa692556b9998d65b
  1. jjb/
  2. .gitignore
  3. .gitreview
  4. .yamllint
  5. tox.ini