Github user aledsage commented on the issue:
https://github.com/apache/brooklyn-server/pull/919
I tested this with an app something like:
```
location:
multi:
targets:
- jclouds:aws-ec2:us-east-1a
- jclouds:aws-ec2:us-east-1b
services:
- type: org.apache.brooklyn.entity.group.DynamicCluster
brooklyn.config:
dynamiccluster.zone.enable: true
initialSize: 2
memberSpec:
$brooklyn:entitySpec:
type: org.apache.brooklyn.entity.group.DynamicCluster
brooklyn.config:
initialSize: 1
memberSpec:
$brooklyn:entitySpec:
type: server
```
It failed before this change, and works after this change.
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