Increase bessd memory requests and limits

Change-Id: I8737fc5246a8eed7799d243887d6312192e73a3d
diff --git a/omec/omec-user-plane/values.yaml b/omec/omec-user-plane/values.yaml
index ab6421f..0822a28 100644
--- a/omec/omec-user-plane/values.yaml
+++ b/omec/omec-user-plane/values.yaml
@@ -26,10 +26,10 @@
   bess:
     requests:
       cpu: 2
-      memory: 256Mi
+      memory: 512Mi
     limits:
       cpu: 2
-      memory: 256Mi
+      memory: 512Mi
   routectl:
     requests:
       cpu: 256m