Disable mongodb by default

It's not used by any service that we enable by default. So instead, I
added it to the environment that enables the services that use it.

Change-Id: Id2e6550fb7c319fc52469644ea022cf35757e0ce

environments/services/ceilometer-collector.yaml

@@ -1,2 +1,3 @@
 resource_registry:
   OS::TripleO::Services::CeilometerCollector: ../../puppet/services/ceilometer-collector.yaml
+  OS::TripleO::Services::MongoDb: ../../puppet/services/database/mongodb.yaml

environments/services/zaqar.yaml

@@ -1,2 +1,3 @@
 resource_registry:
   OS::TripleO::Services::Zaqar: ../../puppet/services/zaqar.yaml
+  OS::TripleO::Services::MongoDb: ../../puppet/services/database/mongodb.yaml

overcloud-resource-registry-puppet.j2.yaml

@@ -171,7 +171,7 @@ resource_registry:
   OS::TripleO::Services::Sshd: puppet/services/sshd.yaml
   OS::TripleO::Services::Redis: puppet/services/database/redis.yaml
   OS::TripleO::Services::NovaConductor: puppet/services/nova-conductor.yaml
-  OS::TripleO::Services::MongoDb: puppet/services/database/mongodb.yaml
+  OS::TripleO::Services::MongoDb: puppet/services/disabled/mongodb-disabled.yaml
   OS::TripleO::Services::NovaApi: puppet/services/nova-api.yaml
   OS::TripleO::Services::NovaPlacement: puppet/services/nova-placement.yaml
   OS::TripleO::Services::NovaMetadata: puppet/services/nova-metadata.yaml

puppet/services/disabled/mongodb-disabled.yaml

@@ -0,0 +1,38 @@
+heat_template_version: pike
+
+description: >
+  Mongodb service, disabled by default since pike
+
+parameters:
+  ServiceNetMap:
+    default: {}
+    description: Mapping of service_name -> network name. Typically set
+                 via parameter_defaults in the resource registry.  This
+                 mapping overrides those in ServiceNetMapDefaults.
+    type: json
+  DefaultPasswords:
+    default: {}
+    type: json
+  EndpointMap:
+    default: {}
+    description: Mapping of service endpoint -> protocol. Typically set
+                 via parameter_defaults in the resource registry.
+    type: json
+  RoleName:
+    default: ''
+    description: Role name on which the service is applied
+    type: string
+  RoleParameters:
+    default: {}
+    description: Parameters specific to the role
+    type: json
+
+outputs:
+  role_data:
+    description: Role data for the disabled MongoDB role.
+    value:
+      service_name: mongodb_disabled
+      upgrade_tasks:
+        - name: Stop and disable mongodb service on upgrade
+          tags: step1
+          service: name=mongod state=stopped enabled=no

releasenotes/notes/Disable-mongodb-by-default-cce37d3254a77d27.yaml

@@ -0,0 +1,8 @@
+---
+upgrade:
+  - Mongodb is no longer used by default, so now one has to enable it
+    explicitly if there's a need for using it.
+other:
+  - Mongodb is not used by any service we enable by default, so it has been
+    removed from the default services. It has subsequently been added to the
+    services that use it (zaqar and ceilometer-collector).