fix(chart): Update Keystone API ports

This change modifies the internal Keystone API port in the Armada chart
from 80 to 5000 and removes the default admin port to match the
Keystone chart provided by OpenStack-Helm.

Change-Id: I689a3b2df36cca4a2f23385fdb294e0017bc7f35

charts/armada/values.yaml

@@ -111,17 +111,16 @@ endpoints:
         user_domain_name: default
         username: armada
     hosts:
-      default: keystone-api
-      public: keystone
+      default: keystone
+      internal: keystone-api
     path:
       default: /v3
     scheme:
       default: http
     port:
-      admin:
-        default: 35357
       api:
         default: 80
+        internal: 5000
     host_fqdn_override:
       default: null
   armada: