AETHER-896 Changes to integrate with Rancher Monitoring v2

Change-Id: I423f1070bad727e467521e73962ee91a8a282b78
diff --git a/monitoring/grafana-aether/requirements.yaml b/monitoring/grafana-aether/requirements.yaml
index af1ded3..e10bc60 100644
--- a/monitoring/grafana-aether/requirements.yaml
+++ b/monitoring/grafana-aether/requirements.yaml
@@ -5,3 +5,4 @@
   - name: grafana
     version: 5.5.0
     repository: https://kubernetes-charts.storage.googleapis.com/
+    condition: grafana.enabled