VMware: fix broken mock of ds_util.mkdir
VMware: fix broken mock of ds_util.mkdir

Change I788e33dbcb3dedc41831b976137607274b1c02ca introduced an
incorrect use of mock which had side-effects for other tests. This
change fixes it.

Change-Id: I71188ec7c12d51c2b4a253f13a5f51cc8bc0ae36

hanlind/nova,Metaswitch/calico-nova,devendermishrajio/nova_test_latest,vmturbo/nova,edulramirez/nova,orbitfp7/nova,petrutlucian94/nova,angdraug/nova,cloudbase/nova-virtualbox,CEG-FYP-OpenStack/scheduler,berrange/nova,berrange/nova,CCI-MOC/nova,JioCloud/nova_test_latest,whitepages/nova,nikesh-mahalka/nova,klmitch/nova,Stavitsky/nova,sebrandon1/nova,jianghuaw/nova,JianyuWang/nova,badock/nova,klmitch/nova,gooddata/openstack-nova,scripnichenko/nova,TwinkleChawla/nova,eonpatapon/nova,Juniper/nova,mikalstill/nova,nikesh-mahalka/nova,tealover/nova,noironetworks/nova,mandeepdhami/nova,watonyweng/nova,sebrandon1/nova,cernops/nova,BeyondTheClouds/nova,mgagne/nova,Yusuke1987/openstack_template,adelina-t/nova,rajalokan/nova,eayunstack/nova,alaski/nova,sebrandon1/nova,Yusuke1987/openstack_template,noironetworks/nova,ruslanloman/nova,mikalstill/nova,alaski/nova,petrutlucian94/nova,jeffrey4l/nova,mahak/nova,whitepages/nova,devendermishrajio/nova,apporc/nova,iuliat/nova,rajalokan/nova,klmitch/nova,zaina/nova,blueboxgroup/nova,zaina/nova,affo/nova,shail2810/nova,alexandrucoman/vbox-nova-driver,bigswitch/nova,silenceli/nova,adelina-t/nova,felixma/nova,mmnelemane/nova,bgxavier/nova,tianweizhang/nova,tealover/nova,Juniper/nova,Juniper/nova,Francis-Liu/animated-broccoli,fnordahl/nova,projectcalico/calico-nova,redhat-openstack/nova,alvarolopez/nova,raildo/nova,openstack/nova,jianghuaw/nova,akash1808/nova_test_latest,redhat-openstack/nova,j-carpentier/nova,felixma/nova,double12gzh/nova,JioCloud/nova_test_latest,vmturbo/nova,takeshineshiro/nova,vmturbo/nova,JioCloud/nova,cyx1231st/nova,zzicewind/nova,rahulunair/nova,gooddata/openstack-nova,dawnpower/nova,MountainWei/nova,akash1808/nova_test_latest,cernops/nova,raildo/nova,tianweizhang/nova,hanlind/nova,Tehsmash/nova,j-carpentier/nova,alexandrucoman/vbox-nova-driver,akash1808/nova,double12gzh/nova,projectcalico/calico-nova,isyippee/nova,isyippee/nova,phenoxim/nova,jianghuaw/nova,shail2810/nova,Tehsmash/nova,angdraug/nova,badock/nova,orbitfp7/nova,cernops/nova,varunarya10/nova_test_latest,kimjaejoong/nova,JianyuWang/nova,mandeepdhami/nova,LoHChina/nova,iuliat/nova,joker946/nova,tangfeixiong/nova,belmiromoreira/nova,yosshy/nova,tudorvio/nova,eayunstack/nova,hanlind/nova,TwinkleChawla/nova,tangfeixiong/nova,alvarolopez/nova,Stavitsky/nova,gooddata/openstack-nova,phenoxim/nova,eonpatapon/nova,vmturbo/nova,jianghuaw/nova,thomasem/nova,Francis-Liu/animated-broccoli,yosshy/nova,klmitch/nova,yatinkumbhare/openstack-nova,thomasem/nova,bigswitch/nova,BeyondTheClouds/nova,openstack/nova,zhimin711/nova,belmiromoreira/nova,mmnelemane/nova,takeshineshiro/nova,CloudServer/nova,rajalokan/nova,edulramirez/nova,devendermishrajio/nova_test_latest,MountainWei/nova,dims/nova,JioCloud/nova,devendermishrajio/nova,CloudServer/nova,fnordahl/nova,LoHChina/nova,joker946/nova,mahak/nova,tudorvio/nova,silenceli/nova,CCI-MOC/nova,mikalstill/nova,ruslanloman/nova,rahulunair/nova,dawnpower/nova,ted-gould/nova,rahulunair/nova,CEG-FYP-OpenStack/scheduler,affo/nova,varunarya10/nova_test_latest,maelnor/nova,apporc/nova,mgagne/nova,zhimin711/nova,gooddata/openstack-nova,yatinkumbhare/openstack-nova,barnsnake351/nova,cloudbase/nova,mahak/nova,zzicewind/nova,openstack/nova,scripnichenko/nova,blueboxgroup/nova,BeyondTheClouds/nova,cyx1231st/nova,cloudbase/nova,cloudbase/nova-virtualbox,NeCTAR-RC/nova,maelnor/nova,cloudbase/nova,dims/nova,akash1808/nova,jeffrey4l/nova,Juniper/nova,ted-gould/nova,rajalokan/nova,barnsnake351/nova,NeCTAR-RC/nova,Metaswitch/calico-nova,kimjaejoong/nova,bgxavier/nova,watonyweng/nova