Bump chart version of omec-control-plane and grafana-aether to satisfy version linter

Change-Id: Ic1da6bc754851aed0196c92f287fc1bda14601bf
diff --git a/omec/omec-control-plane/Chart.yaml b/omec/omec-control-plane/Chart.yaml
index 0c673d8..2af4f10 100644
--- a/omec/omec-control-plane/Chart.yaml
+++ b/omec/omec-control-plane/Chart.yaml
@@ -10,4 +10,4 @@
 name: omec-control-plane
 icon: https://guide.opencord.org/logos/cord.svg
 
-version: 0.3.0
+version: 0.3.1