huweihua f1d143128e check mariadb galera status in every loop.
in extend_start.sh, if Mariadb galera is not ready at first time, it will sleep 60s and then exit 1.
we should check it`s status every time in the loop.

Change-Id: I89174969687eecbf467ca3cad9aad1bfbfb8c4fe
Closes-Bug: #1676316
2017-03-27 17:04:17 +08:00
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