Major improvement in OSM charms

- Adapt all new operator charms to use the same pattern. They are all
using now this library that encapsulates the common logic for all
charms: https://github.com/davigar15/ops-lib-charmed-osm. That will be
eventually moved to gitlab, when it has a PyPI repository available
- Add unit tests to all charms
- Modify installer and bundles to point to the new charms
- Improve the build.sh script for building the charms

Change-Id: I0896ceb082d1b6a76b3560c07482a4135a220a3f
Signed-off-by: David Garcia <david.garcia@canonical.com>
diff --git a/installers/charm/ng-ui/src/pod_spec.py b/installers/charm/ng-ui/src/pod_spec.py
index 1687756..95d5f72 100644
--- a/installers/charm/ng-ui/src/pod_spec.py
+++ b/installers/charm/ng-ui/src/pod_spec.py
@@ -20,6 +20,9 @@
 # osm-charmers@lists.launchpad.net
 ##
 
+# pylint: disable=E0213,E0611
+
+
 import logging
 from pydantic import (
     BaseModel,