Jonathan Rosser 802fb4649a Delegate check of db connectivity during upgrade
The upgrade script assumes it is possible to make a TCP connection from
the deploy host to the db containers. This breaks when there is an ssh
bastion in the way.

Change-Id: Iaed95049e6c6590578972ff23ae70a9af3f0c8fe
2018-10-31 17:00:55 +00:00
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