Add oslo_reports file_event_handler config option

openstack-must-gather is able to trigger GMR for many services.
Manila is being added through [1], and, as done with cinder,
this patch adds a default file_event_handler path to point to
/var/lib/manila that we know is chowned to manila:manila by [3].

[1] openstack-k8s-operators/openstack-must-gather#104
[2] https://github.com/openstack-k8s-operators/tcib/blob/main/container-images/kolla/base/uid_gid_manage.sh#L56

Signed-off-by: Francesco Pantano <[email protected]>

Author: fmount

templates/manila/config/00-config.conf

@@ -93,3 +93,6 @@ enforce_scope = true
 share_driver = manila.tests.share.drivers.dummy.DummyDriver
 share_backend_name = alpha
 driver_handles_share_servers = False
+
+[oslo_reports]
+file_event_handler=/var/lib/manila