Revert "remove cinder-rtstool because of rtslib dep"
Revert "remove cinder-rtstool because of rtslib dep"

This reverts commit b66c3361be2095186e19b0d44e49a8b2c48f7235.

Dependencies of this code (rtslib-fb) are now Apache-licensed,
which resolves the previous issue with this code being in-tree.

This patch is a direct revert, other patches will follow to
line up changes that have occurred between b66c336 and now.

Conflicts:
	setup.py

Blueprint: lio-rtslib

Change-Id: I14786bddf419d98ff7c468b185462f5387dbbba1

bswartz/cinder,scottdangelo/RemoveVolumeMangerLocks,mahak/cinder,apporc/cinder,petrutlucian94/cinder,tlakshman26/cinder-bug-fix-volume-conversion-full,manojhirway/ExistingImagesOnNFS,alex8866/cinder,Datera/cinder,manojhirway/ExistingImagesOnNFS,redhat-openstack/cinder,alex8866/cinder,nikesh-mahalka/cinder,mahak/cinder,abusse/cinder,Paul-Ezell/cinder-1,duhzecca/cinder,scality/cinder,tlakshman26/cinder-new-branch,Accelerite/cinder,Hybrid-Cloud/cinder,saeki-masaki/cinder,openstack/cinder,JioCloud/cinder,NeCTAR-RC/cinder,spring-week-topos/cinder-week,apporc/cinder,scality/cinder,blueboxgroup/cinder,hguemar/cinder,tlakshman26/cinder-bug-fix-volume-conversion-full,NeCTAR-RC/cinder,eharney/cinder,dims/cinder,Hybrid-Cloud/cinder,tlakshman26/cinder-https-changes,tlakshman26/cinder-https-changes,spring-week-topos/cinder-week,abusse/cinder,hguemar/cinder,Thingee/cinder,sasukeh/cinder,sasukeh/cinder,Datera/cinder,rakeshmi/cinder,cloudbau/cinder,nexusriot/cinder,Thingee/cinder,j-griffith/cinder,phenoxim/cinder,winndows/cinder,eharney/cinder,cloudbase/cinder,cloudbau/cinder,j-griffith/cinder,duhzecca/cinder,ge0rgi/cinder,nikesh-mahalka/cinder,Thingee/cinder,CloudServer/cinder,potsmaster/cinder,tlakshman26/cinder-new-branch,openstack/cinder,github-borat/cinder,Nexenta/cinder,saeki-masaki/cinder,leilihh/cinder,redhat-openstack/cinder,takeshineshiro/cinder,dims/cinder,petrutlucian94/cinder,CloudServer/cinder,NetApp/cinder,blueboxgroup/cinder,Akrog/cinder,JioCloud/cinder,julianwang/cinder,bswartz/cinder,potsmaster/cinder,scottdangelo/RemoveVolumeMangerLocks,julianwang/cinder,nexusriot/cinder,phenoxim/cinder,Paul-Ezell/cinder-1,leilihh/cinder,takeshineshiro/cinder,Accelerite/cinder,NetApp/cinder,winndows/cinder,Akrog/cinder,cloudbase/cinder,github-borat/cinder,rakeshmi/cinder,Nexenta/cinder