Update a1 mediator image and helm installation

Update a1 mediator image to 2.5.0 and helm installation.

Issue-ID: RIC-653
Signed-off-by: subhash kumar singh <subh.singh@samsung.com>
Change-Id: I992b0ccfe43489ad470dab3fe7d549cfb8402e9c
diff --git a/bin/verify-ric-charts b/bin/verify-ric-charts
index 696e447..fdeda1b 100755
--- a/bin/verify-ric-charts
+++ b/bin/verify-ric-charts
@@ -40,7 +40,7 @@
 if ! $($HELM_COMMAND > /dev/null);then
     echo "Download and install Helm"
     if [ ! -e helm-v${HELMVERSION}-linux-amd64.tar.gz ]; then
-      wget -nv https://storage.googleapis.com/kubernetes-helm/helm-v${HELMVERSION}-linux-amd64.tar.gz
+      wget -nv https://get.helm.sh/helm-v${HELMVERSION}-linux-amd64.tar.gz
     fi
     tar -xvf ./helm-v${HELMVERSION}-linux-amd64.tar.gz
     mv linux-amd64/helm ./
diff --git a/helm/a1mediator/values.yaml b/helm/a1mediator/values.yaml
index 2790586..841bfb2 100644
--- a/helm/a1mediator/values.yaml
+++ b/helm/a1mediator/values.yaml
@@ -25,7 +25,7 @@
   imagePullPolicy: IfNotPresent
   image:
     name: ric-plt-a1
-    tag: 2.1.9
+    tag: 2.5.0
     registry: "nexus3.o-ran-sc.org:10002/o-ran-sc"
 
   # Service ports are now defined in