Use dynamic includes for conditional tasks

Using import for conditional tasks cause them to be loaded and
each tasks recorded as skipped. This consumes execution time and
can be easily avoided using dynamic includes.

While this behavior was reverted before [1] due to
tags mis-behavior, we learned how to deal with
tags applied to dynamic includes.

[1] https://review.opendev.org/c/openstack/openstack-ansible-os_keystone/+/665139

Change-Id: I29c79755a091bb1992b82a97fc6fa3fb33531edf
Signed-off-by: Dmitriy Rabotyagov <dmitriy.rabotyagov@cleura.com>

tasks/main.yml

@@ -100,16 +100,24 @@
   tags:
     - always
 
-- name: Importing keystone_federation_sp_shib_setup tasks
-  ansible.builtin.import_tasks: keystone_federation_sp_shib_setup.yml
+- name: Including keystone_federation_sp_shib_setup tasks
+  ansible.builtin.include_tasks:
+    file: keystone_federation_sp_shib_setup.yml
+    apply:
+      tags:
+        - keystone-config
   when:
     - keystone_sp_apache_mod_shib
     - not (keystone_use_uwsgi | bool)
   tags:
     - keystone-config
 
-- name: Importing keystone_apache tasks
-  ansible.builtin.import_tasks: "keystone_apache.yml"
+- name: Including keystone_apache tasks
+  ansible.builtin.include_tasks:
+    file: "keystone_apache.yml"
+    apply:
+      tags:
+        - keystone-config
   when:
     - not (keystone_use_uwsgi | bool)
   tags:
@@ -133,23 +141,35 @@
     - keystone-config
     - post-install
 
-- name: Importing keystone_fernet tasks
-  ansible.builtin.import_tasks: keystone_fernet.yml
+- name: Including keystone_fernet tasks
+  ansible.builtin.include_tasks:
+    file: keystone_fernet.yml
+    apply:
+      tags:
+        - keystone-config
   when:
     - "'fernet' in keystone_token_provider"
     - keystone_service_setup | bool
   tags:
     - keystone-config
 
-- name: Importing keystone_db_sync tasks
-  ansible.builtin.import_tasks: keystone_db_sync.yml
+- name: Including keystone_db_sync tasks
+  ansible.builtin.include_tasks:
+    file: keystone_db_sync.yml
+    apply:
+      tags:
+        - keystone-config
   when:
     - "keystone_database_enabled | bool"
   tags:
     - keystone-config
 
-- name: Importing keystone_credential tasks
-  ansible.builtin.import_tasks: keystone_credential.yml
+- name: Including keystone_credential tasks
+  ansible.builtin.include_tasks:
+    file: keystone_credential.yml
+    apply:
+      tags:
+        - keystone-config
   when: keystone_service_setup | bool
   tags:
     - keystone-config
@@ -254,7 +274,11 @@
     - always
 
 - name: Including keystone_ldap_setup tasks
-  ansible.builtin.import_tasks: keystone_ldap_setup.yml
+  ansible.builtin.include_tasks:
+    file: keystone_ldap_setup.yml
+    apply:
+      tags:
+        - keystone-config
   when:
     - keystone_service_setup | bool
     - keystone_ldap != {}