Fix invalid Cinder endpoint option in nova.conf

From the change [1], a new option ``interface`` was added to [cinder]
category to override Cinder endpoint to internalURL for both
service_types. ``block-storage`` and ``volumev3`` (deprecated).

However, this is not a valid option and it fails to override cinder
endpoint, resulting Nova to use public Cinder endpoint instead.

This change set proper overriding by replacing ``interface = internal``
to ``catalog_info = block-storage::internalURL``.

[1] https://review.opendev.org/c/openstack/kolla-ansible/+/937038

Closes-bug: #2115064
Change-Id: I276b499f5c560a55e7acf42069066385ad76e94c

ansible/roles/nova-cell/templates/nova.conf.j2

@@ -109,7 +109,7 @@ num_retries = 3
 
 {% if enable_cinder | bool %}
 [cinder]
-interface = internal
+catalog_info = block-storage::internalURL
 os_region_name = {{ openstack_region_name }}
 auth_url = {{ keystone_internal_url }}
 auth_type = password

ansible/roles/nova/templates/nova.conf.j2

@@ -64,7 +64,7 @@ debug = {{ nova_logging_debug }}
 
 {% if enable_cinder | bool %}
 [cinder]
-interface = internal
+catalog_info = block-storage::internalURL
 os_region_name = {{ openstack_region_name }}
 auth_url = {{ keystone_internal_url }}
 auth_type = password

releasenotes/notes/fix-invalid-cinder-endpoint-option-in-nova-conf-417aae41d82cbdb2.yaml

@@ -0,0 +1,6 @@
+---
+fixes:
+  - |
+    Fixes a bug where Cinder endpoint that Nova uses does not get
+    overridden because of the use of invalid option.
+    `LP#2115064 <https://bugs.launchpad.net/kolla-ansible/+bug/2115064>`__