Move common compute clients to the setting method
Move common compute clients to the setting method

There is a _set_compute_clients() method for setting compute clients,
but there are some compute clients settings at the outside method.
So this patch moves them into the method for cleanup.

Change-Id: I2ac68f3640ed8f17e088dec06dc4a5054a953f45

tudorvio/tempest,jamielennox/tempest,masayukig/tempest,alinbalutoiu/tempest,xbezdick/tempest,cisco-openstack/tempest,pandeyop/tempest,hpcloud-mon/tempest,bigswitch/tempest,manasi24/jiocloud-tempest-qatempest,hayderimran7/tempest,hayderimran7/tempest,openstack/tempest,afaheem88/tempest,Tesora/tesora-tempest,pczerkas/tempest,manasi24/jiocloud-tempest-qatempest,neerja28/Tempest,afaheem88/tempest,afaheem88/tempest_neutron,nunogt/tempest,rzarzynski/tempest,varunarya10/tempest,vedujoshi/tempest,Lilywei123/tempest,NexusIS/tempest,rakeshmi/tempest,pczerkas/tempest,Juraci/tempest,sebrandon1/tempest,Vaidyanath/tempest,Vaidyanath/tempest,manasi24/tempest,ebagdasa/tempest,dkalashnik/tempest,Juraci/tempest,danielmellado/tempest,eggmaster/tempest,zsoltdudas/lis-tempest,FujitsuEnablingSoftwareTechnologyGmbH/tempest,JioCloud/tempest,tonyli71/tempest,CiscoSystems/tempest,LIS/lis-tempest,akash1808/tempest,yamt/tempest,neerja28/Tempest,jamielennox/tempest,LIS/lis-tempest,Lilywei123/tempest,redhat-cip/tempest,hpcloud-mon/tempest,redhat-cip/tempest,akash1808/tempest,alinbalutoiu/tempest,FujitsuEnablingSoftwareTechnologyGmbH/tempest,izadorozhna/tempest,nunogt/tempest,varunarya10/tempest,JioCloud/tempest,manasi24/tempest,CiscoSystems/tempest,afaheem88/tempest_neutron,pandeyop/tempest,tonyli71/tempest,danielmellado/tempest,roopali8/tempest,rakeshmi/tempest,jaspreetw/tempest,bigswitch/tempest,jaspreetw/tempest,masayukig/tempest,eggmaster/tempest,rzarzynski/tempest,roopali8/tempest,vedujoshi/tempest,izadorozhna/tempest,dkalashnik/tempest,tudorvio/tempest,flyingfish007/tempest,yamt/tempest,xbezdick/tempest,Juniper/tempest,sebrandon1/tempest,Juniper/tempest,zsoltdudas/lis-tempest,ebagdasa/tempest,Tesora/tesora-tempest,NexusIS/tempest,flyingfish007/tempest,openstack/tempest,cisco-openstack/tempest