Adjust the awx-manage script to make use of importlib (ansible#15015)

* Adjust the awx-manage script to make use of importlib

removing the deprecation warning.

* Synlink awx-manage in docker-compose

No longer need to rebuild docker-compose devel image to load change for `tools/docker-compose/awx-manage` in development environment

---------

Co-authored-by: Hao Liu <44379968+TheRealHaoLiu@users.noreply.github.com>

tools/ansible/roles/dockerfile/templates/Dockerfile.j2

@@ -242,7 +242,8 @@ ADD tools/scripts/awx-python /usr/bin/awx-python
 
 {% if (build_dev|bool) or (kube_dev|bool) %}
 RUN echo /awx_devel > /var/lib/awx/venv/awx/lib/python3.11/site-packages/awx.egg-link
-ADD tools/docker-compose/awx-manage /usr/local/bin/awx-manage
+RUN echo /awx_devel > /var/lib/awx/venv/awx/lib/python3.11/site-packages/awx.pth
+RUN ln -sf /awx_devel/tools/docker-compose/awx-manage /usr/local/bin/awx-manage
 RUN ln -sf /awx_devel/tools/scripts/awx-python /usr/bin/awx-python
 RUN ln -sf /awx_devel/tools/scripts/rsyslog-4xx-recovery /usr/bin/rsyslog-4xx-recovery
 {% endif %}

tools/docker-compose/awx-manage

@@ -1,8 +1,17 @@
 #!/usr/bin/awx-python
-# EASY-INSTALL-ENTRY-SCRIPT: 'awx','console_scripts','awx-manage'
 import sys
-from pkg_resources import load_entry_point
-__requires__ = 'awx'
+from importlib.metadata import distribution
+
+
+def load_entry_point(dist, group, name):
+    dist_name, _, _ = dist.partition('==')
+    matches = (
+        entry_point
+        for entry_point in distribution(dist_name).entry_points
+        if entry_point.group == group and entry_point.name == name
+    )
+    return next(matches).load()
+
 
 if __name__ == '__main__':
     sys.exit(