Fix image tag in helm chart and installer sripts

Change-Id: I960ecd79db4a37a3f8c71b35169cbdc6e657c1d5
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>
diff --git a/installers/install_mongodb.sh b/installers/install_mongodb.sh
index 213d2f4..f1767d8 100755
--- a/installers/install_mongodb.sh
+++ b/installers/install_mongodb.sh
@@ -74,7 +74,7 @@
 
 DEBUG_INSTALL=${DEBUG_INSTALL:-}
 OSM_DEVOPS=${OSM_DEVOPS:-"/usr/share/osm-devops"}
-OSM_DOCKER_TAG=${OSM_DOCKER_TAG:-"testing-daily"}
+OSM_DOCKER_TAG=${OSM_DOCKER_TAG:-"16"}
 OSM_HELM_WORK_DIR=${OSM_HELM_WORK_DIR:-"/etc/osm/helm"}
 OSM_NAMESPACE=${OSM_NAMESPACE:-"osm"}
 DOCKER_REGISTRY_URL=${DOCKER_REGISTRY_URL:-}