Rename package murano-api to murano

Added backward compatibility logic to murano
to enable Icehouse deployment, but depends on
setting openstack_version to 2014.1.X-6.0

blueprint fuel-deploy-juno

Co-Authored-By: Dmitry Borodaenko <dborodaenko@mirantis.com>
Change-Id: I5b7f314c3e9ff8fd34c4e2a7044e282b55ee6b7c
Merge "Rename package murano-api to murano"