Move common utility code to plugins.module_utils.util (#390)

* Move common utility code to plugins.module_utils.util.

* Also adjust plugins.

* Fix import.

changelogs/fragments/390-util.yml

@@ -0,0 +1,2 @@
+minor_changes:
+  - "Move common utility functions from the ``common`` module_util to a new module_util called ``util``. This should not have any user-visible effect (https://github.com/ansible-collections/community.docker/pull/390)."

plugins/inventory/docker_containers.py

@@ -156,6 +156,8 @@
 
 from ansible_collections.community.docker.plugins.module_utils.common import (
     RequestException,
+)
+from ansible_collections.community.docker.plugins.module_utils.util import (
     DOCKER_COMMON_ARGS_VARS,
 )
 from ansible_collections.community.docker.plugins.plugin_utils.common import (

plugins/inventory/docker_swarm.py

@@ -147,7 +147,8 @@
 
 from ansible.errors import AnsibleError
 from ansible.module_utils.common.text.converters import to_native
-from ansible_collections.community.docker.plugins.module_utils.common import update_tls_hostname, get_connect_params
+from ansible_collections.community.docker.plugins.module_utils.common import get_connect_params
+from ansible_collections.community.docker.plugins.module_utils.util import update_tls_hostname
 from ansible.plugins.inventory import BaseInventoryPlugin, Constructable
 from ansible.parsing.utils.addresses import parse_address