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/build.sh b/installers/charm/build.sh
index 65dd87d..459da13 100755
--- a/installers/charm/build.sh
+++ b/installers/charm/build.sh
@@ -17,12 +17,12 @@
     cd $1 && tox -qe build && cd ..
 }
 
-charms="ro nbi pla pol mon lcm ng-ui keystone grafana prometheus mariadb-k8s mongodb-k8s zookeeper-k8s kafka-k8s mongodb-exporter kafka-exporter mysqld-exporter"
+charms="ro nbi pla pol mon lcm ng-ui grafana prometheus mongodb-exporter kafka-exporter mysqld-exporter"
 if [ -z `which charmcraft` ]; then
-    sudo snap install charmcraft --edge
+    sudo snap install charmcraft --classic
 fi
 
 for charm_directory in $charms; do
-    build $charm_directory &
+    build $charm_directory
 done
 wait
\ No newline at end of file