config proxy settings inside glance_api container

Adding the capability to configure settings for http_proxy https_proxy
and no_proxy inside glance_api container. This is required when import
images from external http resources behind a proxy.

Co-Authored-By: Paul Bourke <paul.bourke@oracle.com>
Closes-bug: #1775815
Change-Id: I85661f04311d5671adecc84c470f2e4db07cfe1d

ansible/roles/glance/defaults/main.yml

@@ -7,6 +7,7 @@ glance_services:
     group: glance-api
     enabled: true
     image: "{{ glance_api_image_full }}"
+    environment: "{{ container_proxy }}"
     volumes:
       - "{{ node_config_directory }}/glance-api/:{{ container_config_directory }}/:ro"
       - "/etc/localtime:/etc/localtime:ro"

ansible/roles/glance/handlers/main.yml

@@ -13,6 +13,7 @@
     common_options: "{{ docker_common_options }}"
     name: "{{ service.container_name }}"
     image: "{{ service.image }}"
+    environment: "{{ service.environment }}"
     volumes: "{{ service.volumes|reject('equalto', '')|list }}"
   when:
     - kolla_action != "config"

ansible/roles/glance/tasks/config.yml

@@ -118,6 +118,7 @@
     common_options: "{{ docker_common_options }}"
     name: "{{ item.value.container_name }}"
     image: "{{ item.value.image }}"
+    environment: "{{ item.value.environment | default(omit) }}"
     volumes: "{{ item.value.volumes|reject('equalto', '')|list }}"
   register: check_glance_containers
   when: