All zuul.conf files can have the same contents, including the
connection information. To reduce the chances of error, set
it in only one place.
If some entries in zuul_connections_secrets aren't available
(because they are specified in a narrower group), we simply won't
include them in the zuul.conf file for that group. That should
be fine.
Change-Id: I446f531162f409e7479eb904251d0c75b9a6e8ff
Make inventory/service for service-specific things, including the
groups.yaml group definitions, and inventory/base for hostvars
related to the base system, including the list of hosts.
Move the exisitng host_vars into inventory/service, since most of
them are likely service-specific. Move group_vars/all.yaml into
base/group_vars as almost all of it is related to base things,
with the execption of the gerrit public key.
A followup patch will move host-specific values into equivilent
files in inventory/base.
This should let us override hostvars in gate jobs. It should also
allow us to do better file matchers - and to be able to organize
our playbooks move if we want to.
Depends-On: https://review.opendev.org/731583
Change-Id: Iddf57b5be47c2e9de16b83a1bc83bee25db995cf
