Call df with -k instead of -B1
Call df with -k instead of -B1

Fix bug 893840

Change-Id: Ibdb5fe364f3ce086ee198d90f3593f3852fe2c97

joker946/nova,nikesh-mahalka/nova,isyippee/nova,eneabio/nova,maheshp/novatest,aristanetworks/arista-ovs-nova,luogangyi/bcec-nova,mandeepdhami/nova,gspilio/nova,tudorvio/nova,fajoy/nova,silenceli/nova,JioCloud/nova,orbitfp7/nova,barnsnake351/nova,edulramirez/nova,Triv90/Nova,mmnelemane/nova,Triv90/Nova,maheshp/novatest,shahar-stratoscale/nova,paulmathews/nova,saleemjaveds/https-github.com-openstack-nova,JianyuWang/nova,rickerc/nova_audit,cloudbase/nova-virtualbox,joker946/nova,klmitch/nova,ted-gould/nova,double12gzh/nova,josephsuh/extra-specs,maoy/zknova,Metaswitch/calico-nova,tealover/nova,petrutlucian94/nova_dev,mahak/nova,DirectXMan12/nova-hacking,maelnor/nova,tanglei528/nova,eneabio/nova,CCI-MOC/nova,usc-isi/extra-specs,alvarolopez/nova,tealover/nova,usc-isi/nova,russellb/nova,double12gzh/nova,TieWei/nova,noironetworks/nova,Brocade-OpenSource/OpenStack-DNRM-Nova,aristanetworks/arista-ovs-nova,viggates/nova,paulmathews/nova,vladikr/nova_drafts,OpenAcademy-OpenStack/nova-scheduler,rickerc/nova_audit,sridevikoushik31/nova,citrix-openstack-build/nova,yrobla/nova,mgagne/nova,projectcalico/calico-nova,whitepages/nova,felixma/nova,sridevikoushik31/nova,vmturbo/nova,Yusuke1987/openstack_template,CEG-FYP-OpenStack/scheduler,tanglei528/nova,mikalstill/nova,shootstar/novatest,klmitch/nova,LoHChina/nova,NeCTAR-RC/nova,noironetworks/nova,cloudbau/nova,vmturbo/nova,savi-dev/nova,cloudbase/nova,paulmathews/nova,tangfeixiong/nova,rajalokan/nova,rahulunair/nova,cyx1231st/nova,NewpTone/stacklab-nova,mahak/nova,SUSE-Cloud/nova,usc-isi/nova,whitepages/nova,cloudbase/nova,fajoy/nova,qwefi/nova,TwinkleChawla/nova,ntt-sic/nova,Triv90/Nova,SUSE-Cloud/nova,phenoxim/nova,akash1808/nova,KarimAllah/nova,rrader/nova-docker-plugin,savi-dev/nova,thomasem/nova,Yuriy-Leonov/nova,jianghuaw/nova,iuliat/nova,raildo/nova,sridevikoushik31/openstack,sridevikoushik31/openstack,spring-week-topos/nova-week,Metaswitch/calico-nova,dstroppa/openstack-smartos-nova-grizzly,berrange/nova,Stavitsky/nova,rajalokan/nova,nikesh-mahalka/nova,yrobla/nova,TwinkleChawla/nova,leilihh/nova,isyippee/nova,eharney/nova,BeyondTheClouds/nova,devendermishrajio/nova,usc-isi/extra-specs,affo/nova,gspilio/nova,NewpTone/stacklab-nova,mikalstill/nova,alexandrucoman/vbox-nova-driver,alaski/nova,barnsnake351/nova,sileht/deb-openstack-nova,mikalstill/nova,houshengbo/nova_vmware_compute_driver,gooddata/openstack-nova,petrutlucian94/nova,zhimin711/nova,MountainWei/nova,shail2810/nova,takeshineshiro/nova,NeCTAR-RC/nova,devendermishrajio/nova_test_latest,CCI-MOC/nova,hanlind/nova,luogangyi/bcec-nova,CloudServer/nova,raildo/nova,openstack/nova,maheshp/novatest,zaina/nova,imsplitbit/nova,devoid/nova,psiwczak/openstack,gooddata/openstack-nova,cernops/nova,devendermishrajio/nova,Tehsmash/nova,eharney/nova,MountainWei/nova,cyx1231st/nova,houshengbo/nova_vmware_compute_driver,mandeepdhami/nova,orbitfp7/nova,maelnor/nova,apporc/nova,ewindisch/nova,zzicewind/nova,belmiromoreira/nova,klmitch/nova,usc-isi/nova,bgxavier/nova,eonpatapon/nova,CloudServer/nova,badock/nova,Juniper/nova,zaina/nova,JioCloud/nova_test_latest,openstack/nova,ruslanloman/nova,akash1808/nova,cloudbase/nova,vladikr/nova_drafts,angdraug/nova,tianweizhang/nova,j-carpentier/nova,Juniper/nova,virtualopensystems/nova,sebrandon1/nova,berrange/nova,varunarya10/nova_test_latest,usc-isi/extra-specs,alaski/nova,blueboxgroup/nova,cloudbase/nova-virtualbox,phenoxim/nova,josephsuh/extra-specs,Stavitsky/nova,sebrandon1/nova,Yuriy-Leonov/nova,bgxavier/nova,projectcalico/calico-nova,cernops/nova,affo/nova,fnordahl/nova,russellb/nova,akash1808/nova_test_latest,hanlind/nova,gooddata/openstack-nova,jianghuaw/nova,KarimAllah/nova,petrutlucian94/nova_dev,alvarolopez/nova,sacharya/nova,sridevikoushik31/nova,rajalokan/nova,eonpatapon/nova,psiwczak/openstack,yatinkumbhare/openstack-nova,leilihh/nova,virtualopensystems/nova,adelina-t/nova,mmnelemane/nova,zhimin711/nova,sridevikoushik31/openstack,ewindisch/nova,spring-week-topos/nova-week,tudorvio/nova,jianghuaw/nova,qwefi/nova,Juniper/nova,watonyweng/nova,rahulunair/nova,DirectXMan12/nova-hacking,iuliat/nova,Juniper/nova,CEG-FYP-OpenStack/scheduler,plumgrid/plumgrid-nova,Brocade-OpenSource/OpenStack-DNRM-Nova,eayunstack/nova,CiscoSystems/nova,psiwczak/openstack,fajoy/nova,edulramirez/nova,JioCloud/nova_test_latest,cloudbau/nova,KarimAllah/nova,TieWei/nova,scripnichenko/nova,devendermishrajio/nova_test_latest,badock/nova,mahak/nova,NoBodyCam/TftpPxeBootBareMetal,DirectXMan12/nova-hacking,dims/nova,ted-gould/nova,jianghuaw/nova,shail2810/nova,yosshy/nova,takeshineshiro/nova,JianyuWang/nova,dawnpower/nova,jeffrey4l/nova,bigswitch/nova,shahar-stratoscale/nova,silenceli/nova,yrobla/nova,felixma/nova,tianweizhang/nova,belmiromoreira/nova,blueboxgroup/nova,j-carpentier/nova,aristanetworks/arista-ovs-nova,BeyondTheClouds/nova,Yusuke1987/openstack_template,Francis-Liu/animated-broccoli,ntt-sic/nova,sileht/deb-openstack-nova,vmturbo/nova,savi-dev/nova,redhat-openstack/nova,dstroppa/openstack-smartos-no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