Wait for backgroup apt upgrade

Make sure the backgrund apt upgrade finish before
we proceed with the job

Change-Id: Ifb12a085b39096827715754cd38d00c3e00654df
1 file changed
tree: 934e06d37a5a9b79056c2b11fc63bc6e36a0bb88
  1. jjb/
  2. .gitignore
  3. .gitreview
  4. .yamllint
  5. tox.ini