[FAB-13350] Fix etcdraft flaky test
[FAB-13350] Fix etcdraft flaky test

Change-Id: Icd364101a350ab6fa2959f196f346c717a16337f
Signed-off-by: Jay Guo <91d7eeb83d08be0dc56ea674009c4b53383e15b3@gmail.com>

xixuejia/fabric,xixuejia/fabric,xixuejia/fabric