Add the option to remove packages during upgrade

This change adds the option to remove the rpm packages for services
which are migrated to containers during the upgrade as described in
https://bugzilla.redhat.com/show_bug.cgi?id=1470041

Change-Id: Ia0570a44139c6ef3845ddff19e3d80e54603a59b

defaults/main.yml

@@ -115,3 +115,6 @@ controller_upgrade_post: false
 
 # Provide a custom ssh-config file
 need_ssh_config: true
+
+# Remove packages which get migrated to containers during upgrade
+upgrade_remove_rpm: false

infrared_plugin/main.yml

@@ -103,5 +103,10 @@
          force_reboot: true
       when: install.upgrade.reboot.force
 
+    - name: Set upgrade remove packages
+      set_fact:
+         upgrade_remove_rpm: true
+      when: install.upgrade.remove.rpm
+
   roles:
     - tripleo-upgrade

infrared_plugin/plugin.spec

@@ -83,6 +83,10 @@ subparsers:
                       type: Value
                       help: The alternative docker registry to use for deployment.
                       default: 'registry.example.local'
+                  upgrade-remove-rpm:
+                      type: Bool
+                      help: Remove packages which get migrated to containers during upgrade
+                      default: false
             - title: TripleO Update
               options:
                   overcloud-update:

tasks/upgrade/create-upgrade-scripts.yaml

@@ -140,6 +140,12 @@
   register: deployment_with_ha
   ignore_errors: True
 
+- name: create environment file to remove rpm packages
+  template:
+    src: "remove-packages.yaml.j2"
+    dest: "{{ working_dir }}/remove-packages.yaml"
+  when: upgrade_remove_rpm|bool
+
 - name: create composable upgrade scripts
   include: step_upgrade.yml
   loop_control:
@@ -154,6 +160,7 @@
         - "{% if ceph_env is defined %}{{ working_dir }}/ceph-ansible-env.yaml{% endif %}"
         - "{% if not upstream_container_images or (upstream_container_images and use_local_docker_registry) %}{{ containers_default_parameters }}{% endif %}"
         - "{% if dpdk_env|succeeded %}{{working_dir}}/dpdk-upgrade-env.yaml{% endif %}"
+        - "{% if upgrade_remove_rpm|bool %}{{ working_dir }}/remove-packages.yaml{% endif %}"
     - step: "Docker containers converge upgrade"
       script: "{{ overcloud_converge_upgrade_script }}"
       environment_file:

templates/remove-packages.yaml.j2

@@ -0,0 +1,2 @@
+parameter_defaults:
+  UpgradeRemoveUnusedPackages: true