Change stx-openstack services token validation endpoint

If no interface is set, the default is the admin interface.
In a normal deployment both openstack-keystone admin and internal
endpoints are exposed on the same URL.

In case of Distributed Cloud openstack-keystone URL for admin is
overriden to something different than internal URL.

Due to lack of interface, the default `admin` is used, yet the URL is
set to the interal one. The config doesn't point to a valid Keystone
service. Thus Cinder, Nova and Nova-api-proxy cannot validate tokens.

Modify configs for services to point to the internal keystone service.

Closes-Bug: 1875914
Change-Id: I19385f1fe27cf8f20f5ee7b43abf86b220c9d8d6
Signed-off-by: Dan Voiculeasa <dan.voiculeasa@windriver.com>

stx-openstack-helm/stx-openstack-helm/manifests/manifest.yaml

@@ -775,6 +775,8 @@ data:
         DEFAULT:
           backup_driver: cinder.backup.drivers.ceph.CephBackupDriver
           osapi_volume_listen: "::"
+        keystone_authtoken:
+          interface: internal
     storage: rbd
   source:
     type: tar
@@ -1035,6 +1037,8 @@ data:
           metadata_listen: "::"
           metadata_host: "::"
           my_ip: "::"
+        keystone_authtoken:
+          interface: internal
         vnc:
           novncproxy_host: "::"
           vncserver_listen: "::"
@@ -1248,6 +1252,8 @@ data:
         DEFAULT:
           osapi_proxy_listen: "::"
           nfvi_compute_listen: "::"
+        keystone_authtoken:
+          interface: internal
   source:
     type: tar
     location: http://172.17.0.1/helm_charts/starlingx/nova-api-proxy-0.1.0.tgz