Emilien Macchi b74f306ba1 Validate MongoDB is running before Ceilometer DB config
With a new util, we can validate MongoDB cluster is up and running so
let's use it when configuring Ceilometer DB on Collector nodes.

It makes sure we don't try to configure Ceilometer DB while MongoDB is
not ready.

Change-Id: Iad3c4d152e1536427de0741d3ff16bf7dae724a0
Closes-bug: #1451461
2015-06-09 10:19:12 -04:00
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