Migrate command line parsing to argparse (#50610)

* Start of migration to argparse

* various fixes and improvements

* Linting fixes

* Test fixes

* Fix vault_password_files

* Add PrependAction for argparse

* A bunch of additional tweak/fixes

* Fix ansible-config tests

* Fix man page generation

* linting fix

* More adhoc pattern fixes

* Add changelog fragment

* Add support for argcomplete

* Enable argcomplete global completion

* Rename PrependAction to PrependListAction to better describe what it does

* Add documentation for installing and configuring argcomplete

* Address rebase issues

* Fix display encoding for vault

* Fix line length

* Address rebase issues

* Handle rebase issues

* Use mutually exclusive group instead of handling manually

* Fix rebase issues

* Address rebase issue

* Update version added for argcomplete support

* -e must be given a value

* ci_complete

test/units/cli/test_adhoc.py

@@ -14,28 +14,19 @@ from ansible.errors import AnsibleOptionsError
 def test_parse():
     """ Test adhoc parse"""
     adhoc_cli = AdHocCLI([])
-    with pytest.raises(AnsibleOptionsError) as exec_info:
+    with pytest.raises(SystemExit) as exec_info:
         adhoc_cli.parse()
-    assert "Missing target hosts" == str(exec_info.value)
 
 
 def test_with_command():
     """ Test simple adhoc command"""
     module_name = 'command'
-    adhoc_cli = AdHocCLI(args=['-m', module_name, '-vv'])
+    adhoc_cli = AdHocCLI(args=['ansible', '-m', module_name, '-vv', 'localhost'])
     adhoc_cli.parse()
     assert context.CLIARGS['module_name'] == module_name
     assert display.verbosity == 2
 
 
-def test_with_extra_parameters():
-    """ Test extra parameters"""
-    adhoc_cli = AdHocCLI(args=['-m', 'command', 'extra_parameters'])
-    with pytest.raises(AnsibleOptionsError) as exec_info:
-        adhoc_cli.parse()
-    assert "Extraneous options or arguments" == str(exec_info.value)
-
-
 def test_simple_command():
     """ Test valid command and its run"""
     adhoc_cli = AdHocCLI(['/bin/ansible', '-m', 'command', 'localhost', '-a', 'echo "hi"'])
@@ -89,3 +80,10 @@ def test_run_import_playbook():
         adhoc_cli.run()
     assert context.CLIARGS['module_name'] == import_playbook
     assert "'%s' is not a valid action for ad-hoc commands" % import_playbook == str(exec_info.value)
+
+
+def test_run_no_extra_vars():
+    adhoc_cli = AdHocCLI(args=['/bin/ansible', 'localhost', '-e'])
+    with pytest.raises(SystemExit) as exec_info:
+        adhoc_cli.parse()
+    assert exec_info.value.code == 2