CharmHub and new kafka and zookeeper charms

- Charmed installer uses bundles published in CharmHub
- Use new zookeeper and kafka sidecar-charm
- Changes in the charms to integrate with the new Kafka

Change-Id: Ie59fe1c7c72774b317abe2433fafb28a11472b72
Signed-off-by: David Garcia <david.garcia@canonical.com>
diff --git a/installers/charm/pla/tests/test_charm.py b/installers/charm/pla/tests/test_charm.py
index debc378..d577e9f 100644
--- a/installers/charm/pla/tests/test_charm.py
+++ b/installers/charm/pla/tests/test_charm.py
@@ -102,7 +102,7 @@
         kafka_relation_id = self.harness.add_relation("kafka", "kafka")
         self.harness.add_relation_unit(kafka_relation_id, "kafka/0")
         self.harness.update_relation_data(
-            kafka_relation_id, "kafka/0", {"host": "kafka", "port": 9092}
+            kafka_relation_id, "kafka", {"host": "kafka", "port": 9092}
         )
 
     def initialize_mongo_config(self):