Add type annotations to the certbot package (part 1) (#9084)

* Extract from #9084

* Cast/ignore types during the transition

* Fix after review

* Fix lint

certbot-apache/certbot_apache/_internal/configurator.py

@@ -2437,10 +2437,9 @@ class ApacheConfigurator(common.Installer, interfaces.Authenticator):
         except errors.SubprocessError as err:
             logger.warning("Unable to restart apache using %s",
                         self.options.restart_cmd)
-            alt_restart = self.options.restart_cmd_alt
-            if alt_restart:
+            if self.options.restart_cmd_alt:
                 logger.debug("Trying alternative restart command: %s",
-                             alt_restart)
+                             self.options.restart_cmd_alt)
                 # There is an alternative restart command available
                 # This usually is "restart" verb while original is "graceful"
                 try:

certbot-apache/certbot_apache/_internal/override_debian.py

@@ -118,7 +118,8 @@ class DebianConfigurator(configurator.ApacheConfigurator):
         # Generate reversal command.
         # Try to be safe here... check that we can probably reverse before
         # applying enmod command
-        if not util.exe_exists(self.options.dismod):
+        if (self.options.dismod is None or self.options.enmod is None
+                or not util.exe_exists(self.options.dismod)):
             raise errors.MisconfigurationError(
                 "Unable to find a2dismod, please make sure a2enmod and "
                 "a2dismod are configured correctly for certbot.")