tree d4513aa6d7a8eabb1cb1e956479a32d58c4da5ed
parent a3ec744b99efb60bb7a1bbda25b76f260dcea0fc
author CharliePu <heihaozi2006@163.com> 1618829920 +0800
committer GitHub <noreply@github.com> 1618829920 +0800
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When creating service groups in the topology, it is better if the service names are sorted.  (#478)

* When creating a service group, the service names are sorted in alphabetical order.

* Set types for a and b.

Co-authored-by: Qiuxia Fan <fine0830@outlook.com>