Draft: Add image sharing option to packer template

.gitlab-ci.yml

@@ -14,6 +14,7 @@ variables:
   PKR_VAR_ssh_keypair_name: "dev-keys"
   PKR_VAR_flavor: "m1.medium"
   PKR_VAR_source_image_name: "CentOS-7-x86_64-GenericCloud-1905"
+  PKR_VAR_image_membership: ["xdmod"]
   GIT_SUBMODULE_STRATEGY: recursive
   NUM_IMAGE_TO_KEEP: 5
   AWS_DEFAULT_REGION: "bhm"
@@ -74,4 +75,4 @@ trigger_job:
   variables:
     TARGET_ENV: $TARGET_ENV
   trigger:
-    project: rc/terraform-openstack
\ No newline at end of file
+    project: rc/terraform-openstack