The current existing phases "post-config" and "extra" are not
sufficient to allow local.conf overrides to extra type services
because they run after the services are installed and configured.
This commit introduces a new phase called "post-extra" that runs
after these existing phases. With this change, users are able to
leverage local.conf to provide overridden options to services
like Tempest.
Change-Id: I5d758eebfda804dd1d8cbc3d5cc35ef4dcc8c96f
Closes-Bug: #1249085
Add hooks to stack.sh, unstack.sh and clean.sh to call the extras.d
scripts at multiple points in stack.sh. This allows these scripts to
perform installation and startup tasks at similar times as they would
if integrated into stack.sh.
extras.d/70-tempest.sh is present as an example of the structure
of these scripts.
See extras.d/README.md for more information.
Change-Id: Ic1fe522559b94d204d6c0319a2e3d23684c8d028