add kubectl_sha256 for the upgrade tests

kubectl binary digest is verified upon installation in dev-env. If we
install non-default kubernetes version, kubectl binary will also change
and its digest as well. We need to pass kubernetes_version and
kubectl_sha256 as a pair.

Change-Id: I149e1b10768a12c746f34822c0530b8bcecc9b36
1 file changed
tree: c6c76387b8beb2e0f7fa973c4ec68220c534477b
  1. jjb/
  2. .gitignore
  3. .gitreview
  4. .yamllint
  5. tox.ini