after https://github.com/openstack-infra/project-config/
commit/7334ceb347329ccbc04dc6bff536e88e12783a86 we do not need to
create db, user, role.
Also add usage of CUSTOM_OSTF_CONFIG env variable, to pass
correctly dbpath tp fuel_plugin.config.py
Closes-Bug: #1554086
Change-Id: Ic2881e1cb17693ab616044029325a601d2b04e2c
The thing is that nailgun tests require postgresql backend to
be available. So, we need to prepare it before running tests.
Fortunately, all unit tests are run on nodes where postgresql
is installed.
Change-Id: I8f93bb78cb4144f993fb55936e157b5fe153a4c1
Closes-Bug: #1516609