The service_mapped_to_host filter is used to check if a service is
mapped to a host, based on the group for the service or its
host_in_groups attribute if one exists. We check if the service's group
is in the 'groups' list. However, to get the list of groups to which a
host belongs, we should use the 'group_names' list.
This filter is currently only used in neutron IPv6 module loading, so
the effects are minimal.
Change-Id: I37409ca8d273b0426df0a648db222dc5432e738a
Closes-Bug: #1868285
These filters can be used to capture a lot of the logic that we
currently have in 'when' statements, about which services are enabled
for a particular host.
In order to use these filters, it is necessary to install the
kolla_ansible python module, and not just the dependencies listed in
requirements.txt. The CI test and quickstart install from source
documentation has been updated accordingly.
Ansible is not currently in OpenStack global requirements, so for unit
tests we avoid a direct dependency on Ansible and provide fakes where
necessary.
Change-Id: Ib91cac3c28e2b5a834c9746b1d2236a309529556
