This adds a new script to the runner container that is run in the
entrypoint which runs the log gathering ansible playbook from
inside the runner container. The gate then extracts these logs
with a new role.
This also updates the image_build script to fix how it changes
the container imagePullPolicy
Closes: #658
Relates-To: #659
Change-Id: I24d11c66e7b71852256e164343f7bb2f331d1fef
56972b4317