Integration tests for import/include (#33418)

* First pass at include_role tests

* Reorganize test structure

Do all import and include tests in a single target.

* Build out more tests and test with linear and free strategy for each type

* import_role tests

* Set target host for play test

* Basic import_playbook tests

* Basic import/include_tasks tests

* Add recursion test

* import_playbook tests

* Add import_playbook group_vars test

Issue #33177

* Additional group_var tests for import_playbook

* Enable recursion test

* More work on import_tasks

* Run all tests via run.sh, improve conditional tests, add never tag

Add never tag to certain failining tests and explicitly skip it for now until #34104 is merged. Some tasks need to remain commented out because they cause the entire play to fail and aren't skippable by tags because they are syntax and/or variable checks.

Improve test for whether or not a role was run based on a conditional. Since the [import|include]_role does not register a variable, use a variable that is set inside a role as a canary test for whether or not the role was run.

* Use a fail task rather than trigger a failure via bogus command

This should resolve the "unstable" test results.

* Import tag tests

Fix bug it tests where validate tasks weren't run on tag tests.
Add tests for task import/include with tags.

* Remove test for playbook group_var inheritance

test/integration/targets/includes/test_includes2.yml

@@ -10,7 +10,8 @@
   hosts: testhost
   gather_facts: True
   roles:
-    - { role: test_includes, tags: test_includes }
+    - role: test_includes
+      tags: test_includes
   tasks:
     - include: roles/test_includes/tasks/not_a_role_task.yml
     - include: roles/test_includes/tasks/empty.yml

test/integration/targets/includes/test_includes3.yml

@@ -1,4 +1,3 @@
----
 - hosts: localhost
   tasks:
     - include: test_includes4.yml