Update gnbsim, sctplb images

- Also correcting metricfunction name in the helm charts
- Updating mongoDB helm charts

Change-Id: I9627cd6e819f1c91ad7b8d571c448cb23ab912ee
diff --git a/5g-ran-sim/values.yaml b/5g-ran-sim/values.yaml
index b188168..1364247 100644
--- a/5g-ran-sim/values.yaml
+++ b/5g-ran-sim/values.yaml
@@ -6,7 +6,7 @@
   repository: "" #default docker hub
   tags:
     init: omecproject/pod-init:1.0.0
-    gnbsim: omecproject/5gc-gnbsim:main-22cae6e
+    gnbsim: omecproject/5gc-gnbsim:main-238bdee
   pullPolicy: IfNotPresent
 
 nodeSelectors: