Consolidate the Local Docker installer and the dev env

- removes local_docker installer and points community users to our development environment (make docker-compose)
  - provides a migration path from Local Docker Compose installations --> the dev environment
  - the dev env can now be configured to use an external database
  - consolidated the Local Docker and dev env docker-compose.yml files into one template file, used by the dockerfile role
  - added a 'sources' role to template out config files
  - the postgres data dir is no longer a bind-mount, it is a docker volume
  - the redis socket is not longer a bind-mount, it is a docker volume
  - the local_settings.py.docker-compose file no longer needs to be copied over in the dev env
  - Create tmp rsyslog.conf in rsyslog volume to avoid cross-linking. Previously, the tmp code-generated rsyslog.conf was being written to /tmp (by default).  As a result, we were attempting to shutil.move() across volumes.
  - move k8s image build and push roles under tools/ansible
  - See tools/docker-compose/README.md for usage of these changes

.gitignore

@@ -36,7 +36,11 @@ awx/ui_next/.env.local
 awx/ui_next/instrumented
 rsyslog.pid
 tools/prometheus/data
+tools/docker-compose/ansible/awx_dump.sql
 tools/docker-compose/Dockerfile
+tools/docker-compose/_build
+tools/docker-compose/_sources
+tools/docker-compose/overrides/
 
 # Tower setup playbook testing
 setup/test/roles/postgresql
@@ -146,7 +150,6 @@ use_dev_supervisor.txt
 .idea/*
 *.unison.tmp
 *.#
-/tools/docker-compose/overrides/
 /awx/ui_next/.ui-built
 /Dockerfile
 /_build/