Increase memory request and limit for bessd

Change-Id: I362be4af284857dbace4804beed5126ad1d64e9a
diff --git a/bess-upf/values.yaml b/bess-upf/values.yaml
index 9e18a83..df8540e 100644
--- a/bess-upf/values.yaml
+++ b/bess-upf/values.yaml
@@ -23,10 +23,10 @@
   bess:
     requests:
       cpu: 2
-      memory: 512Mi
+      memory: 1Gi
     limits:
       cpu: 2
-      memory: 512Mi
+      memory: 1Gi
   routectl:
     requests:
       cpu: 256m