Documentation updates

Fix documentation in README.md and metadata.yaml

Change-Id: I5a0371445bae849325c498a0f91c5e3bb87e6923

charms/octavia-k8s/README.md

@@ -14,13 +14,13 @@ octavia-k8s is deployed using below command:
 
     juju deploy octavia-k8s octavia --trust
 
-Now connect the octavia operator to existing database
-and keystone identity operators:
+Now connect the octavia operator to existing database,
+keystone identity, ovn-central and certificates operators:
 
     juju relate mysql:database octavia:database
     juju relate keystone:identity-service octavia:identity-service
     juju relate ovn-central:ovsdb-cms octavia:ovsdb-cms
-    juju relate tls-operator:certificates octavia:certificates
+    juju relate self-signed-certificates:certificates octavia:certificates
 
 ### Configuration
 

charms/octavia-k8s/config.yaml

@@ -4,22 +4,22 @@ options:
     description: Enable debug logging.
     type: boolean
   os-admin-hostname:
-    default: glance.juju
+    default: octavia.juju
     description: |
       The hostname or address of the admin endpoints that should be advertised
-      in the glance image provider.      
+      in the  loadbalancer provider.
     type: string
   os-internal-hostname:
-    default: glance.juju
+    default: octavia.juju
     description: |
       The hostname or address of the internal endpoints that should be advertised
-      in the glance image provider.      
+      in the loadbalancer provider.
     type: string
   os-public-hostname:
-    default: glance.juju
+    default: octavia.juju
     description: |
       The hostname or address of the internal endpoints that should be advertised
-      in the glance image provider.      
+      in the loadbalancer provider.
     type: string
   region:
     default: RegionOne

charms/octavia-k8s/metadata.yaml

@@ -3,6 +3,7 @@ summary: OpenStack Octavia service
 maintainer: OpenStack Charmers <openstack-charmers@lists.ubuntu.com>
 description: |
   OpenStack Octavia provides loadbalancing service for an OpenStack cloud.
+  Currently OVN Octavia provider driver is supported.
 version: 3
 bases:
   - name: ubuntu