Fix ansible_ssh_common_args in molecule.yml (#3121)

* Fix ansible_ssh_common_args in molecule.yml

Makes the option `ansible_ssh_common_args` in molecule.yml work as documented.

* Fixed formatting (black)

Co-authored-by: Sorin Sbarnea <ssbarnea@redhat.com>

src/molecule/driver/delegated.py

@@ -171,7 +171,16 @@ def default_safe_files(self):
     @property
     def default_ssh_connection_options(self):
         if self.managed:
-            return self._get_ssh_connection_options()
+            ssh_connopts = self._get_ssh_connection_options()
+            if self.options.get("ansible_connection_options", {}).get(
+                "ansible_ssh_common_args", None
+            ):
+                ssh_connopts.append(
+                    self.options.get("ansible_connection_options").get(
+                        "ansible_ssh_common_args"
+                    )
+                )
+            return ssh_connopts
         return []
 
     def login_options(self, instance_name):