Make update-from-keystone-admin-internal-api.yaml work on newton+

There are change of ServiceNetMapDefaults in service_net_map.j2.yaml but
were not reproduce in update-from-keystone-admin-internal-api.yaml
environment. Tested in newton.

Closes-Bug: #1646862

Change-Id: I307dcaabbc6d583896090bf3f046b442007fbc42
Signed-off-by: Cyril Lopez <cylopez@redhat.com>
Co-Authored-By: Gregory Charot <gcharot@redhat.com>

environments/updates/update-from-keystone-admin-internal-api.yaml

@@ -2,32 +2,5 @@
 # Keystone Admin API service is running on the Internal API network
 
 parameter_defaults:
-  ServiceNetMapDefaults:
-    NeutronTenantNetwork: tenant
-    CeilometerApiNetwork: internal_api
-    MongodbNetwork: internal_api
-    CinderApiNetwork: internal_api
-    CinderIscsiNetwork: storage
-    GlanceApiNetwork: storage
-    GlanceRegistryNetwork: internal_api
+  ServiceNetMap:
     KeystoneAdminApiNetwork: internal_api
-    KeystonePublicApiNetwork: internal_api
-    NeutronApiNetwork: internal_api
-    HeatApiNetwork: internal_api
-    NovaApiNetwork: internal_api
-    NovaMetadataNetwork: internal_api
-    NovaVncProxyNetwork: internal_api
-    SwiftMgmtNetwork: storage_mgmt
-    SwiftProxyNetwork: storage
-    HorizonNetwork: internal_api
-    MemcachedNetwork: internal_api
-    RabbitmqNetwork: internal_api
-    RedisNetwork: internal_api
-    MysqlNetwork: internal_api
-    CephClusterNetwork: storage_mgmt
-    CephPublicNetwork: storage
-    ControllerHostnameResolveNetwork: internal_api
-    ComputeHostnameResolveNetwork: internal_api
-    BlockStorageHostnameResolveNetwork: internal_api
-    ObjectStorageHostnameResolveNetwork: internal_api
-    CephStorageHostnameResolveNetwork: storage