Added requirements gates for Murano repositories

Added requirements gates for the following murano repositories:
 https://github.com/stackforge/murano-common
 https://github.com/stackforge/murano-api
 https://github.com/stackforge/python-muranoclient
 https://github.com/stackforge/murano-metadataclient
 https://github.com/stackforge/murano-conductor
 https://github.com/stackforge/murano-repository
 https://github.com/stackforge/murano-dashboard

Change-Id: I5631cfc0f2343fd94210dd10d6d273c73000f1c4
Merge "Added requirements gates for Murano repositories"