Add variable to bootstrap role to describe the test job action
Add variable to bootstrap role to describe the test job action

This can be 'deploy', 'upgrade' or other actions passed via the
ACTION environment variable.

Change-Id: Ic769c0a0e9d79429cdeb1c4d20a6957f57a765a5

openstack/openstack-ansible,stackforge/os-ansible-deployment,openstack/openstack-ansible,stackforge/os-ansible-deployment