Restore ansible --version output (#55728)

* Add custom action class for version info
* Use args from CLI as prog for ArgumentParser object
* Make prog a required parameter of create_base_parser() and update all uses to pass in the newly required parameter.
* Add unit test for checking ansible --version
* Update other related unit tests

lib/ansible/cli/__init__.py

@@ -61,6 +61,9 @@ class CLI(with_metaclass(ABCMeta, object)):
         Base init method for all command line programs
         """
 
+        if not args:
+            raise ValueError('A non-empty list for args is required')
+
         self.args = args
         self.parser = None
         self.callback = callback
@@ -275,7 +278,7 @@ class CLI(with_metaclass(ABCMeta, object)):
                 ansible.arguments.option_helpers.add_runas_options(self.parser)
                 self.parser.add_option('--my-option', dest='my_option', action='store')
         """
-        self.parser = opt_help.create_base_parser(usage=usage, desc=desc, epilog=epilog)
+        self.parser = opt_help.create_base_parser(os.path.basename(self.args[0]), usage=usage, desc=desc, epilog=epilog, )
 
     @abstractmethod
     def post_process_args(self, options):

lib/ansible/cli/arguments/option_helpers.py

@@ -29,6 +29,13 @@ class SortingHelpFormatter(argparse.HelpFormatter):
         super(SortingHelpFormatter, self).add_arguments(actions)
 
 
+class AnsibleVersion(argparse.Action):
+    def __call__(self, parser, namespace, values, option_string=None):
+        ansible_version = to_native(version(getattr(parser, 'prog')))
+        print(ansible_version)
+        parser.exit()
+
+
 class PrependListAction(argparse.Action):
     """A near clone of ``argparse._AppendAction``, but designed to prepend list values
     instead of appending.
@@ -171,12 +178,13 @@ def version(prog=None):
 # Functions to add pre-canned options to an OptionParser
 #
 
-def create_base_parser(usage="", desc=None, epilog=None):
+def create_base_parser(prog, usage="", desc=None, epilog=None):
     """
     Create an options parser for all ansible scripts
     """
     # base opts
     parser = argparse.ArgumentParser(
+        prog=prog,
         formatter_class=SortingHelpFormatter,
         epilog=epilog,
         description=desc,
@@ -184,7 +192,8 @@ def create_base_parser(usage="", desc=None, epilog=None):
     )
     version_help = "show program's version number, config file location, configured module search path," \
                    " module location, executable location and exit"
-    parser.add_argument('--version', action='version', version=to_native(version("%(prog)s")), help=version_help)
+
+    parser.add_argument('--version', action=AnsibleVersion, nargs=0, help=version_help)
     add_verbosity_options(parser)
     return parser