Ensure that qpid connection is closed (from oslo)
Ensure that qpid connection is closed (from oslo)

This is commit a9bc62814d in oslo-incubator

Fixes bug 1172922

When reestablishing a session and a connection already exists the
existing connection will be closed prior to opening the new one.

Change-Id: I9a25800fe4b56eba89d550e3461ce095bf902f0a

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