Use namespaced doc fragment, cleanup

doc fragment will now be at awx.awx.auth
changed from just tower, which source from core

remove Makefile things no longer needed

awx_collection/plugins/doc_fragments/auth.py

@@ -0,0 +1,46 @@
+# -*- coding: utf-8 -*-
+
+# Copyright: (c) 2017, Wayne Witzel III <wayne@riotousliving.com>
+# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
+
+
+class ModuleDocFragment(object):
+
+    # Ansible Tower documentation fragment
+    DOCUMENTATION = r'''
+options:
+  tower_host:
+    description:
+    - URL to your Tower or AWX instance.
+    type: str
+  tower_username:
+    description:
+    - Username for your Tower or AWX instance.
+    type: str
+  tower_password:
+    description:
+    - Password for your Tower or AWX instance.
+    type: str
+  validate_certs:
+    description:
+    - Whether to allow insecure connections to Tower or AWX.
+    - If C(no), SSL certificates will not be validated.
+    - This should only be used on personally controlled sites using self-signed certificates.
+    type: bool
+    aliases: [ tower_verify_ssl ]
+  tower_config_file:
+    description:
+    - Path to the Tower or AWX config file.
+    type: path
+
+requirements:
+- ansible-tower-cli >= 3.0.2
+
+notes:
+- If no I(config_file) is provided we will attempt to use the tower-cli library
+  defaults to find your Tower host information.
+- I(config_file) should contain Tower configuration in the following format
+    host=hostname
+    username=username
+    password=password
+'''