Add role to provice a service_type_data fact

We need to map from project name to service-type name from time to
time. The data is standard, so grab it from its published location
and use it.

Change-Id: Iea42ba981cee260cbccd0b1eb2705d3ad419bf20

roles/set-service-type-data-fact/README.rst

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+Set service_type facts for a given project
+
+Sets a type ``service_type_data`` which contains the service information
+for the current project as defined by the "service" definition in:
+
+http://specs.openstack.org/openstack/service-types-authority/downloads/published-schema.json

roles/set-service-type-data-fact/library/get_service_type_data.py

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+# Copyright (C) 2017 Red Hat, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+# implied.
+#
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import json
+
+from ansible.module_utils.basic import AnsibleModule
+
+
+def main():
+    module = AnsibleModule(
+        argument_spec=dict(
+            project_name=dict(type='str'),
+            service_types_file=dict(type='str'),
+        ),
+    )
+
+    project_name = module.params['project_name']
+    service_types_file = module.params['service_types_file']
+
+    service_data = json.load(open(service_types_file, 'r'))
+    if project_name in service_data['primary_service_by_project']:
+        module.exit_json(
+            service_data['primary_service_by_project'][project_name])
+    else:
+        module.fail_json(
+            msg='Project {name} is not in the Service Types Authority'.format(
+                name=project_name))
+
+
+if __name__ == '__main__':
+    main()

roles/set-service-type-data-fact/tasks/main.yaml

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+tasks:
+  - name: Get service-types data file
+    get_url:
+      url: https://service-types.openstack.org/service-types.json
+      dest: "{{ ansible_user_dir }}/service-types.json"
+
+  - name: Collect service type data for project
+    get_service_type_data:
+      project_name: "{{ zuul.project.short_name }}"
+      service_types_file: "{{ ansible_user_dir }}/service-types.json"
+    register: service_type_data
+
+  - name: Set service_type_data as a fact
+    set_fact:
+      service_type_data: service_type_data