Convert Python 2 type hints to Python 3 types annotations (#8640)

Fixes #8427

This PR converts the Python 2 types hints into Python 3 types annotations. I have used the project https://github.com/ilevkivskyi/com2ann which has been designed for that specific purpose and did that very well.

The only remaining things to do were to fix broken type hints that became wrong code after migration, and to fix lines too long with the new syntax.

* Raw execution of com2ann

* Fixing broken type annotations

* Cleanup imports

certbot-apache/tests/augeasnode_test.py

@@ -107,7 +107,7 @@ class AugeasParserNodeTest(util.ApacheTest):  # pylint: disable=too-many-public-
 
     def test_set_parameters(self):
         servernames = self.config.parser_root.find_directives("servername")
-        names = []  # type: List[str]
+        names: List[str] = []
         for servername in servernames:
             names += servername.parameters
         self.assertFalse("going_to_set_this" in names)

certbot-apache/tests/http_01_test.py

@@ -26,7 +26,7 @@ class ApacheHttp01Test(util.ApacheTest):
         super(ApacheHttp01Test, self).setUp(*args, **kwargs)
 
         self.account_key = self.rsa512jwk
-        self.achalls = []  # type: List[achallenges.KeyAuthorizationAnnotatedChallenge]
+        self.achalls: List[achallenges.KeyAuthorizationAnnotatedChallenge] = []
         vh_truth = util.get_vh_truth(
             self.temp_dir, "debian_apache_2_4/multiple_vhosts")
         # Takes the vhosts for encryption-example.demo, certbot.demo