EDGEPOD-34 Add ability to configure Grafana dashboards to import

Also, bump Prometheus and Grafana helm chart version.

Change-Id: I74ab2f8d70671fa3ccaf2efab2de107c0c5d47b5
diff --git a/nem-monitoring/requirements.yaml b/nem-monitoring/requirements.yaml
index a55e7ea..be9439f 100644
--- a/nem-monitoring/requirements.yaml
+++ b/nem-monitoring/requirements.yaml
@@ -15,9 +15,8 @@
 
 dependencies:
 - name: prometheus
-  version: 6.8.1
+  version: 9.3.1
   repository: https://kubernetes-charts.storage.googleapis.com/
 - name: grafana
-  version: 1.12.0
+  version: 4.0.2
   repository: https://kubernetes-charts.storage.googleapis.com/
-