Minor refactor of the integration service test
Minor refactor of the integration service test

remove the duplicate code

Closes-bug: #1432863
Change-Id: I5d86b4bc3c497d2610ec6bca646d12ff80d75fdd

crobby/sahara,ekasitk/sahara,egafford/sahara,zhangjunli177/sahara,esikachev/sahara-backup,tellesnobrega/sahara,openstack/sahara,zhangjunli177/sahara,henaras/sahara,egafford/sahara,esikachev/sahara-backup,henaras/sahara,openstack/sahara,tellesnobrega/sahara,henaras/sahara,crobby/sahara,ekasitk/sahara,zhangjunli177/sahara,crobby/sahara,ekasitk/sahara,esikachev/sahara-backup