issue #324: fix Python 3 fallout for custom module_utils.

Also enable at last one of its tests.

ansible_mitogen/runner.py

@@ -264,9 +264,9 @@ class ModuleUtilsImporter(object):
         mod.__loader__ = self
         if is_pkg:
             mod.__path__ = []
-            mod.__package__ = fullname
+            mod.__package__ = str(fullname)
         else:
-            mod.__package__ = fullname.rpartition('.')[0]
+            mod.__package__ = str(fullname.rpartition('.')[0])
         exec(code, mod.__dict__)
         self._loaded.add(fullname)
         return mod

tests/ansible/ansible.cfg

@@ -7,7 +7,7 @@ callback_plugins = lib/callback
 stdout_callback = nice_stdout
 vars_plugins = lib/vars
 library = lib/modules
-# module_utils = lib/module_utils
+module_utils = lib/module_utils
 retry_files_enabled = False
 forks = 50
 

tests/ansible/integration/all.yml

@@ -9,7 +9,7 @@
 - import_playbook: connection_loader/all.yml
 - import_playbook: context_service/all.yml
 - import_playbook: local/all.yml
-#- import_playbook: module_utils/all.yml
+- import_playbook: module_utils/all.yml
 - import_playbook: playbook_semantics/all.yml
 - import_playbook: remote_tmp/all.yml
 - import_playbook: runner/all.yml

tests/ansible/integration/module_utils/all.yml

@@ -1,6 +1,6 @@
 
-- import_playbook: from_config_path.yml
-- import_playbook: from_config_path_pkg.yml
-- import_playbook: adjacent_to_playbook.yml
+#- import_playbook: from_config_path.yml
+#- import_playbook: from_config_path_pkg.yml
+#- import_playbook: adjacent_to_playbook.yml
 - import_playbook: adjacent_to_role.yml
-- import_playbook: overrides_builtin.yml
+#- import_playbook: overrides_builtin.yml