Use include instead of import for conditional tasks

When import is used ansible loads imported role or tasks which
results in plenty of skipped tasks which also consume time. With
includes ansible does not try to load play so time not wasted on
skipping things.

Depends-On: https://review.opendev.org/c/openstack/ansible-role-uwsgi/+/880344
Change-Id: I47c6623e166254802ed0b479b2353c5f2ceb5cfa

tasks/main.yml

@@ -103,17 +103,15 @@
   tags:
     - always
 
-- import_tasks: nova_virt_detect.yml
+- include_tasks: nova_virt_detect.yml
   when:
     - nova_virt_type is not defined
   tags:
     - always
-    - nova-config
 
 - import_tasks: nova_mdev_detect.yml
   tags:
     - always
-    - nova-config
 
 - import_tasks: nova_pre_install.yml
   tags:
@@ -204,11 +202,15 @@
   tags:
     - always
 
-- import_tasks: nova_db_setup.yml
+- include_tasks: nova_db_setup.yml
+  args:
+    apply:
+      tags:
+        - nova-config
   when:
     - _nova_is_first_play_host
   tags:
-    - nova-config
+    - always
 
 - name: Import uwsgi role
   import_role:
@@ -216,6 +218,8 @@
   vars:
     uwsgi_services: "{{ uwsgi_nova_services }}"
     uwsgi_install_method: "{{ nova_install_method }}"
+  when:
+    - uwsgi_nova_services | length > 0
   tags:
     - nova-config
     - uwsgi
@@ -253,16 +257,23 @@
     - nova-config
     - systemd-service
 
-- import_tasks: nova_compute.yml
+- include_tasks: nova_compute.yml
+  args:
+    apply:
+      tags:
+        - nova-compute
   when:
     - nova_virt_type != 'ironic'
     - "nova_services['nova-compute']['group'] in group_names"
   tags:
-    - nova-compute
+    - always
 
 - name: Include ceph_client role
-  import_role:
+  include_role:
     name: ceph_client
+    apply:
+      tags:
+        - ceph
   vars:
     openstack_service_system_user: "{{ nova_system_user_name }}"
     openstack_service_venv_bin: "{{ (nova_install_method == 'source') | ternary(nova_bin, '') }}"
@@ -271,7 +282,7 @@
     - nova_services['nova-compute']['group'] in group_names
     - (nova_rbd_inuse | bool) or (nova_glance_rbd_inuse | bool)
   tags:
-    - ceph
+    - always
 
 - name: Flush handlers
   meta: flush_handlers