Convert dynamic includes to static imports

When task/role files are included using include_tasks, tags are not
passed to the included tasks. As a result, tags like swift-config
do not have the intended effect. This patch changes include_tasks
to import_tasks for all cases where dynamic vars or loops are not used
so that tags are properly handled.

Reference -
https://docs.ansible.com/ansible/latest/user_guide/playbooks_reuse.html
https://bugs.launchpad.net/openstack-ansible/+bug/1815043

Change-Id: I7553c3ef4d7620844f614da79b2cb1086eda23cb

tasks/main.yml

@@ -40,60 +40,60 @@
     - always
 
 # Check the swift_hash_path_* variables haven't changed
-- include_tasks: swift_check_hashes.yml
+- import_tasks: swift_check_hashes.yml
   when:
     - "not swift_force_change_hashes | bool"
   tags:
     - swift-config
 
-- include_tasks: swift_pre_install.yml
+- import_tasks: swift_pre_install.yml
   when:
     - "swift_do_setup | bool"
     - "'swift_all' in group_names"
   tags:
     - swift-install
 
-- include_tasks: swift_install.yml
+- import_tasks: swift_install.yml
   when:
     - "swift_do_setup | bool"
     - "'swift_all' in group_names"
   tags:
     - swift-install
 
-- include_tasks: swift_post_install.yml
+- import_tasks: swift_post_install.yml
   when:
     - "swift_do_setup | bool"
     - "'swift_all' in group_names"
   tags:
     - swift-config
 
-- include_tasks: swift_calculate_addresses.yml
+- import_tasks: swift_calculate_addresses.yml
   when:
     - "'swift_hosts' in group_names"
   tags:
     - always
 
-- include_tasks: swift_storage_hosts.yml
+- import_tasks: swift_storage_hosts.yml
   when:
     - "swift_do_setup | bool"
     - "'swift_hosts' in group_names"
   tags:
     - swift-config
 
-- include_tasks: swift_proxy_hosts.yml
+- import_tasks: swift_proxy_hosts.yml
   when:
     - "swift_do_setup | bool"
     - "'swift_proxy' in group_names"
   tags:
     - swift-config
 
-- include_tasks: swift_key_setup.yml
+- import_tasks: swift_key_setup.yml
   when:
     - "swift_do_sync | bool"
   tags:
     - swift-config
 
-- include_tasks: swift_rings.yml
+- import_tasks: swift_rings.yml
   when:
     - "swift_do_sync | bool"
   tags:
@@ -101,7 +101,7 @@
     - swift-rings
 
 - name: Run the systemd service role
-  include_role:
+  import_role:
     name: systemd_service
   vars:
     systemd_user_name: "{{ swift_system_user_name }}"
@@ -148,7 +148,7 @@
     - common-mq
     - swift-config
 
-- include_tasks: swift_service_setup.yml
+- import_tasks: swift_service_setup.yml
   when:
     - "swift_do_setup | bool"
     - '"keystoneauth" in swift_middleware_list'