Remove compatibility with Python 2

Python 2 reached its EOL in 2020.

Change-Id: I137bcba3c6cc4efe83fbc34aded269585b94a6d5

plugins/action/config_template.py

@@ -15,19 +15,11 @@
 # You should have received a copy of the GNU General Public License
 # along with Ansible.  If not, see <http://www.gnu.org/licenses/>.
 
-try:
-    import ConfigParser
-except ImportError:
-    import configparser as ConfigParser
-import datetime
-
-try:
-    from StringIO import StringIO
-except ImportError:
-    from io import StringIO
-
 import base64
+import configparser
+import datetime
 import json
+from io import StringIO
 import os
 import pwd
 import re
@@ -136,7 +128,7 @@ class MultiKeyDict(OrderedDict):
             return super(MultiKeyDict, self).__setitem__(key, value)
 
 
-class ConfigTemplateParser(ConfigParser.RawConfigParser):
+class ConfigTemplateParser(configparser.RawConfigParser):
     """ConfigParser which supports multi key value.
     The parser will use keys with multiple variables in a set as a multiple
     key value within a configuration file.
@@ -192,7 +184,7 @@ class ConfigTemplateParser(ConfigParser.RawConfigParser):
         self._empty_lines_in_values = kwargs.get('allow_no_value', True)
         self._strict = kwargs.get('strict', False)
         self._allow_no_value = self._empty_lines_in_values
-        ConfigParser.RawConfigParser.__init__(self, *args, **kwargs)
+        super(ConfigTemplateParser, self).__init__(self, *args, **kwargs)
 
     def set(self, section, option, value=None):
         if not section or section == 'DEFAULT':
@@ -439,7 +431,7 @@ class ActionModule(ActionBase):
             #  already existing.
             try:
                 config.add_section(section_name)
-            except (ConfigParser.DuplicateSectionError, ValueError):
+            except (configparser.DuplicateSectionError, ValueError):
                 pass
 
         # If there is an exception loading the RawConfigParser The config obj
@@ -463,10 +455,7 @@ class ActionModule(ActionBase):
             )
 
         config_object = StringIO(resultant)
-        try:
-            config.read_file(config_object)
-        except AttributeError:
-            config.readfp(config_object)
+        config.read_file(config_object)
 
         if default_section != 'DEFAULT':
             _add_section(section_name=default_section)
@@ -489,7 +478,7 @@ class ActionModule(ActionBase):
                 for key, value in items.items():
                     try:
                         self._option_write(config, section, key, value)
-                    except ConfigParser.NoSectionError as exp:
+                    except configparser.NoSectionError as exp:
                         error_msg = str(exp)
                         error_msg += (
                             ' Try being more explicit with your override'