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
Create a zuul_data fixture for testinfra.
The fixture directly loads the inventory from the inventory YAML file
written out. This lets you get easy access to the IP addresses of the
hosts.
We pass in the "zuul" variable by writing it out to a YAML file on
disk, and then passing an environment variable to this. This is
useful for things like determining which job is running. Additional
arbitrary data could be added to this if required.
Change-Id: I8adb7601f7eec6d48509f8f1a42840beca70120c
