code review changes

infra-templates/mesos/1/docker-compose.yml

@@ -2,7 +2,7 @@ zookeeper:
   image: rancher/zookeeper:3.4.8
   environment:
     ZK_ENSEMBLE_SIZE: ${ZOOKEEPER_SCALE}
-    JVMFLAGS: -Xmx512m -Xms512m
+    JVMFLAGS: ${ZOOKEEPER_JVM_FLAGS}
     CONFD_INTERVAL: 0
   labels:
     io.rancher.scheduler.affinity:container_label_ne: io.rancher.stack_service.name=$${stack_name}/$${service_name}

infra-templates/mesos/1/rancher-compose.yml

@@ -3,7 +3,7 @@
   minimum_rancher_version: v1.2.0-pre4-rc1
   questions:
   - variable: ZOOKEEPER_SCALE
-    label: Zookeeper Count
+    label: ZooKeeper Count
     description: Number of ZooKeeper nodes to launch. Only one node is scheduled to each host.
     required: true
     default: 3
@@ -21,6 +21,12 @@
     type: enum
     options:
     - 3
+  - variable: ZOOKEEPER_JVM_FLAGS
+    label: ZooKeeper JVM Flags
+    description: Flags to be passed to the JVM running ZooKeeper
+    required: false
+    default: -Xmx512m -Xms512m
+    type: string
 zookeeper:
   scale: ${ZOOKEEPER_SCALE}
   retain_ip: true