Allow them to use an ssh key distinct from production.
Clean up unused slave classes.
Use dedicated keys on dev slaves (do this in prod in the future, but it's a
breaking change).
Add a dev_slave_template class for devstack-gate to use.
Remove devstack-gate deps from jenkins master (they're on devstack-launch
now).
Clean up unneeded remove statements for glance creds.
Tidy up some permissions on files where they weren't specified before.
Change-Id: I02cef1ee3951c5780084118073770521bebb9eda
Reviewed-on: https://review.openstack.org/29319
Reviewed-by: Jeremy Stanley <fungi@yuggoth.org>
Reviewed-by: Clark Boylan <clark.boylan@gmail.com>
Approved: Clark Boylan <clark.boylan@gmail.com>
Tested-by: Jenkins