This role runs Helm template of a specific chart and then makes
sure that all resources become ready afterwards.
Change-Id: I62e160eac673d13bd1018b58fd36cae54e1482b4
Move the chart-testing task to a role (so that it is easily
reconsumable) and update the default arguments to disable checking
for version bumps (instead, we expect to rely on setting the version
when building a release).
Change-Id: I85482dc704c189222c92fd4174f733382ebf69d1