Jens Rosenboom 9abb26d696 Try to set initial mysql root password also on Ubuntu
On Ubuntu nodes, devstack tries to predefine the initial mysql root
password by doing some debconf-set-selections, but these will not take
effect if the corresponding package has been installed earlier. So
just try to set it every time, like we do on other distros.

Change-Id: I2c167051fc5e53dd0ccf82a60ab085cd9cdea28d
2016-12-07 21:12:55 +01:00
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