Add ensure-bazelisk role

This adds a role which installs bazelisk if it is not already
present.  It also adds a test job which exercises the role; the
job will be run on any changes to the new role.

This also removes the noop job since it is no longer needed as
a placeholder.

Change-Id: I69b28b58338b46ec3fea696f9d97be4271ed6ae4
6 files changed
tree: f5d8faffbc6b8077c7ca4c923bc215e9913da5aa
  1. playbooks/
  2. roles/
  3. zuul.d/
  4. .gitreview
  5. LICENSE
  6. README