Use config_template as a collection

Since we still use ceph-ansible that has their own implementation of
config_template module it's worth to use mentioned module as a collection
explicitly.

Depends-On: https://review.opendev.org/c/openstack/openstack-ansible/+/819814



Change-Id: I374d125994239a885007081d0490e4a2c7018235

tasks/placement_post_install.yml

@@ -14,7 +14,7 @@
 # limitations under the License.
 
 - name: Copy placement configs
-  config_template:
+  openstack.config_template.config_template:
     src: "{{ item.src }}"
     dest: "{{ item.dest }}"
     owner: "root"
@@ -32,7 +32,7 @@
     - Restart uwsgi services
 
 - name: Implement policy.yaml if there are overrides configured
-  config_template:
+  openstack.config_template.config_template:
     content: "{{ placement_policy_overrides }}"
     dest: "/etc/placement/policy.yaml"
     config_type: yaml