Setup oslo.messaging extra packages for optional drivers

Change-Id: Idd1866b0527e8594b8e06df66a8d170cf40a317a

defaults/main.yml

@@ -95,6 +95,10 @@ magnum_oslomsg_notify_use_ssl: "{{ oslomsg_notify_use_ssl | default(False) }}"
 magnum_oslomsg_notify_userid: magnum
 magnum_oslomsg_notify_vhost: /magnum
 
+## (Qdrouterd) integration
+# TODO(ansmith): Change structure when more backends will be supported
+magnum_oslomsg_amqp1_enabled: "{{ magnum_oslomsg_rpc_transport == 'amqp' }}"
+
 # Keystone AuthToken/Middleware
 magnum_keystone_auth_plugin: password
 magnum_service_project_domain_name: Default
@@ -133,6 +137,9 @@ magnum_pip_packages:
   - osprofiler
   - uwsgi
 
+magnum_optional_oslomsg_amqp1_pip_packages:
+  - oslo.messaging[amqp1]
+
 # This variable is used by the repo_build process to determine
 # which host group to check for members of before building the
 # pip packages required by this role. The value is picked up

tasks/magnum_install.yml

@@ -128,6 +128,18 @@
   tags:
     - skip_ansible_lint
 
+- name: Install optional pip packages
+  pip:
+    name: "{{ magnum_optional_oslomsg_amqp1_pip_packages }}"
+    state: "{{ magnum_pip_package_state }}"
+    virtualenv: "{{ magnum_bin | dirname }}"
+    virtualenv_site_packages: "no"
+  when: magnum_oslomsg_amqp1_enabled
+  register: install_optional_packages
+  until: install_optional_packages is success
+  retries: 5
+  delay: 2
+
 - name: Record the venv tag deployed
   ini_file:
     dest: "/etc/ansible/facts.d/openstack_ansible.fact"