[FLINK-19327][k8s] Bump JobManager heap size to 1 GB

This closes #157.
diff --git a/tools/k8s/templates/master-deployment.yaml b/tools/k8s/templates/master-deployment.yaml
index e79f20d..1f69f60 100644
--- a/tools/k8s/templates/master-deployment.yaml
+++ b/tools/k8s/templates/master-deployment.yaml
@@ -37,6 +37,9 @@
               value: master
             - name: MASTER_HOST
               value: {{ .Values.master.name }}
+          resources:
+            requests:
+              memory: "{{ .Values.master.container_mem }}"
           ports:
             - containerPort: 6123
               name: rpc
diff --git a/tools/k8s/values.yaml b/tools/k8s/values.yaml
index 112ff80..6568daf 100644
--- a/tools/k8s/values.yaml
+++ b/tools/k8s/values.yaml
@@ -22,7 +22,8 @@
 master:
   name: statefun-master
   image: statefun-application # replace with your image
-  jvm_mem: 500m
+  jvm_mem: 1g
+  container_mem: 1.5Gi
 
 worker:
   name: statefun-worker