Add simple script to setup mysql and postgresql databases, this script
can be run by users during testing and will be run by CI systems for
specific setup before running unit tests. This is exactly what is
currently done by OpenStack CI in project-config.
This allows to change in project-config the python-db/tox-db jobs to
python-jobs/tox since these will call this script initially.
See also
http://lists.openstack.org/pipermail/openstack-dev/2016-November/107784.html
Needed-By: I73f070e54be785f2c44a547bdfe1ed33859eda68
Change-Id: Ie695f2ab7c303fb5034c3a23ae6f8275992d9d51
5ed63c19ca