Remove hardcoded dev values from config.yaml

the config.yaml for the charm contained hardcoded values for the test
rig the charm was developed on. Remove those values.

Change-Id: I789ca890b0976c0bc3737b0b3e82579d10b73873
Closes-Bug: 1606439

src/config.yaml

@@ -41,7 +41,7 @@ options:
     description: "neutron network"
   swift-resource-ip:
     type: string
-    default: "10.245.160.50"
+    default:
     description: "undercloud swift ip"
   cidr-priv:
     type: string
@@ -49,7 +49,7 @@ options:
     description: "cidr priv"
   name-server:
     type: string
-    default: "10.245.160.2"
+    default:
     description: "name server"
   http-proxy:
     type: string

src/templates/tempest.conf

@@ -58,7 +58,9 @@ http_image = http://{{ options.swift_undercloud_ep }}:80/swift/v1/images/cirros-
 [network]
 tenant_network_cidr={{ options.cidr_priv }}
 public_network_id={{ identity_admin.network_info.public_network_id }}
+{% if options.name_server -%}
 dns_servers={{ options.name_server }}
+{% endif -%}
 tenant_networks_reachable = false
 [network-feature-enabled]
 ipv6=false