The 'kayobe control host upgrade' command updates the installed Ansible Galaxy
roles based on requirements.yml. Sometimes roles are removed from that file,
but there is currently no way of removing them from the local system.
Normally this causes no problems, but due to the upstream role containing
symlinks with whitespace, we are switching out yatesr.timezone to a
stackhpc.timezone fork. In order to make upgrades work, we need to ensure the
old role is removed. It also makes sense to clean up old roles generally.
This change adds support for removing stale roles during control host upgrade,
currently including the following roles:
stackhpc.os-flavors
stackhpc.os-projects
stackhpc.parted-1.1
yatesr.timezone
Change-Id: I174c7e6f19cbefda56777229a2441bf6469c0982
Story: 2004252
Task: 29166
b2a11a5830