add new role for ISSU - openstack_compute_legacy

Change-Id: I3ad5dd8e85f4dd2c205072f37bc2009fdcf380f6
Partial-Bug: #1774441

playbooks/roles/install_contrail/tasks/compute_legacy.yml

@@ -0,0 +1,29 @@
+---
+# run openstack-compute-init container with mounted volumes:
+# /usr/bin:/opt/plugin/bin
+# PYTHONPATH:/opt/plugin/site-packages
+
+- name: create /etc/contrail/compute-legacy
+  file:
+    path: /etc/contrail/compute-legacy
+    state: directory
+    recurse: yes
+
+- name: Getting PYTHONPATH
+  shell: python -c "import sys; paths = [path for path in sys.path if 'packages' in path] ; print(paths[-1])"
+  register: pythonpath
+
+- name: update image
+  shell: "docker pull {{ container_registry }}/{{ item }}:{{ contrail_version_tag }}"
+  with_items:
+    - contrail-openstack-compute-init
+  when: UPDATE_IMAGES is undefined or UPDATE_IMAGES != false
+
+- name: "create contrail compute-legacy compose file"
+  template:
+    src: contrail-compute-legacy.yaml.j2
+    dest: "/etc/contrail/compute-legacy/docker-compose.yaml"
+
+- name: "start contrail compute-legacy"
+  docker_service:
+    project_src: /etc/contrail/compute-legacy

playbooks/roles/install_contrail/tasks/main.yml

@@ -20,9 +20,8 @@
 
 - name: set orchestrator param
   set_fact:
-    contrail_configuration: "{{ contrail_configuration | combine({'CLOUD_ORCHESTRATOR': orchestrator}) }}"
+    contrail_configuration: "{{ contrail_configuration | combine({'CLOUD_ORCHESTRATOR': orchestrator | default('none')}) }}"
   when:
-    - orchestrator is defined
     - contrail_configuration.CLOUD_ORCHESTRATOR is not defined
   tags:
    - always
@@ -284,6 +283,10 @@
   tags:
     - vrouter
 
+- name: Pluginize legacy compute
+  include: compute_legacy.yml
+  when: roles[instance_name].openstack_compute_legacy is defined
+
 - name: join k8s master
   include: configure_k8s_join_node.yml
   when: roles[instance_name].k8s_node is defined and k8s_master_name is defined and inventory_hostname != k8s_master_name

playbooks/roles/install_contrail/templates/contrail-compute-legacy.yaml.j2

@@ -0,0 +1,8 @@
+version: '2'
+services:
+  openstack-compute-legacy:
+    image: "{{ container_registry }}/contrail-openstack-compute-init:{{ contrail_version_tag }}"
+    network_mode: "host"
+    volumes:
+      - /usr/bin:/opt/plugin/bin
+      - {{ pythonpath.stdout }}:/opt/plugin/site-packages