Update Keystone API ports in Shipyard chart

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

Change-Id: I8e3b4846ddee9995182eade73146418f0cb70895

charts/shipyard/values.yaml

@@ -181,17 +181,16 @@ endpoints:
         user_domain_name: default
         project_domain_name: default
     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
   shipyard: