1st part of ansible config, adds ansible-config to view/manage configs (#12797)

* Start of ansible config project

moved configuration definitions to external yaml file vs hardcoded
 * updated constants to be a data strcutures that are looped over and also return origin of setting
changed to manager/data scheme for base classes
new cli ansible-config to view/manage ansible configuration settings
 * prints green for default/unchanged and yellow for those that have been overriden
 * added list action to show all configurable settings and their associated ini and env var names
 * allows specifying config file to see what result would look like
 * TBD update, edit and view options

removed test for functions that have been removed

env_Vars are now list of dicts
allows for version_added and deprecation in future
added a couple of descriptions for future doc autogeneration
ensure test does not fail if delete_me exists
normalized 'path expansion'
added yaml config to setup packaging
removed unused imports
better encoding handling

updated as per feedback

* pep8

test/units/cli/test_galaxy.py

@@ -126,7 +126,7 @@ class TestGalaxy(unittest.TestCase):
 
     def test_execute_remove(self):
         # installing role
-        gc = GalaxyCLI(args=["install", "--offline", "-p", self.role_path, "-r", self.role_req])
+        gc = GalaxyCLI(args=["install", "--offline", "-p", self.role_path, "-r", self.role_req, '--force'])
         gc.parse()
         gc.run()