Enable collection integration tests on GHA

There are a number of changes here:

- Abstract out a GHA composite action for running the dev environment
- Update the e2e tests to use that new abstracted action
- Introduce a new (matrixed) job for running collection integration
  tests. This splits the jobs up based on filename.
- Collect coverage info and generate an html report that people can
  download easily to see collection coverage info.
- Do some hacks to delete the intermediary coverage file artifacts
  which aren't needed after the job finishes.

Signed-off-by: Rick Elrod <rick@elrod.me>

awx_collection/tests/integration/targets/user/tasks/main.yml

@@ -220,6 +220,7 @@
       user:
         controller_username: "{{ username }}-orgadmin"
         controller_password: "{{ username }}-orgadmin"
+        controller_oauthtoken: false  # Hack for CI where we use oauth in config file
         username: "{{ username }}"
         first_name: Joe
         password: "{{ 65535 | random | to_uuid }}"