Add ipc_mode=host for nova-compute conainer

ipc_mode=host is required after enabled multipath in nova.

Closes-Bug: #1713639
Depends-On: I0a1d85597999415cab11feb71a7fdfd7af3f7148
Change-Id: Ib0b8961a47b686b6c35456768bbbccc741cb7adf
(cherry picked from commit 5937724503)

ansible/roles/nova/defaults/main.yml

@@ -112,6 +112,7 @@ nova_services:
     image: "{{ nova_compute_image_full }}"
     privileged: True
     enabled: "{{ not enable_nova_fake | bool }}"
+    ipc_mode: "host"
     volumes:
       - "{{ node_config_directory }}/nova-compute/:{{ container_config_directory }}/:ro"
       - "/etc/localtime:/etc/localtime:ro"

ansible/roles/nova/handlers/main.yml

@@ -255,6 +255,7 @@
     name: "{{ service.container_name }}"
     image: "{{ service.image }}"
     privileged: "{{ service.privileged | default(False) }}"
+    ipc_mode: "{{ service.ipc_mode | default(omit) }}"
     volumes: "{{ service.volumes|reject('equalto', '')|list }}"
   when:
     - action != "config"

ansible/roles/nova/tasks/config.yml

@@ -166,6 +166,7 @@
     name: "{{ item.value.container_name }}"
     image: "{{ item.value.image }}"
     pid_mode: "{{ item.value.pid_mode|default('') }}"
+    ipc_mode: "{{ item.value.ipc_mode|default(omit) }}"
     privileged: "{{ item.value.privileged|default(False) }}"
     volumes: "{{ item.value.volumes|reject('equalto', '')|list }}"
   register: check_nova_containers