Baremetal deploy helper sets ODIRECT.
Baremetal deploy helper sets ODIRECT.

Baremetal deploy helper should set oflag=direct when dd'ing images onto
iSCSI targets, so that it doesn't waste the local page cache.

Fixes bug 1114633.

Change-Id: Ia674afb34aff7b842cfcd520ecb7b75dc21944fa

citrix-openstack-build/nova,gooddata/openstack-nova,Stavitsky/nova,Francis-Liu/animated-broccoli,redhat-openstack/nova,sridevikoushik31/nova,petrutlucian94/nova_dev,bclau/nova,akash1808/nova,qwefi/nova,akash1808/nova_test_latest,maelnor/nova,CEG-FYP-OpenStack/scheduler,Brocade-OpenSource/OpenStack-DNRM-Nova,MountainWei/nova,adelina-t/nova,JioCloud/nova,felixma/nova,scripnichenko/nova,vmturbo/nova,tealover/nova,openstack/nova,yatinkumbhare/openstack-nova,rajalokan/nova,ruslanloman/nova,yatinkumbhare/openstack-nova,cloudbase/nova,dims/nova,dawnpower/nova,bclau/nova,saleemjaveds/https-github.com-openstack-nova,petrutlucian94/nova,cernops/nova,cloudbase/nova,JianyuWang/nova,dstroppa/openstack-smartos-nova-grizzly,iuliat/nova,CiscoSystems/nova,belmiromoreira/nova,leilihh/nova,rickerc/nova_audit,mandeepdhami/nova,BeyondTheClouds/nova,bgxavier/nova,cloudbase/nova-virtualbox,Brocade-OpenSource/OpenStack-DNRM-Nova,TieWei/nova,projectcalico/calico-nova,sebrandon1/nova,petrutlucian94/nova,alexandrucoman/vbox-nova-driver,leilihh/novaha,mgagne/nova,affo/nova,ntt-sic/nova,edulramirez/nova,varunarya10/nova_test_latest,mahak/nova,eayunstack/nova,alvarolopez/nova,Tehsmash/nova,yosshy/nova,OpenAcademy-OpenStack/nova-scheduler,yrobla/nova,JianyuWang/nova,j-carpentier/nova,hanlind/nova,orbitfp7/nova,cloudbau/nova,NeCTAR-RC/nova,tudorvio/nova,mahak/nova,Yuriy-Leonov/nova,barnsnake351/nova,sridevikoushik31/nova,CloudServer/nova,angdraug/nova,LoHChina/nova,yrobla/nova,adelina-t/nova,bigswitch/nova,leilihh/novaha,gooddata/openstack-nova,zhimin711/nova,apporc/nova,iuliat/nova,Tehsmash/nova,rajalokan/nova,ewindisch/nova,takeshineshiro/nova,mandeepdhami/nova,rahulunair/nova,eonpatapon/nova,gooddata/openstack-nova,luogangyi/bcec-nova,DirectXMan12/nova-hacking,CCI-MOC/nova,yrobla/nova,badock/nova,tanglei528/nova,raildo/nova,ruslanloman/nova,ewindisch/nova,luogangyi/bcec-nova,plumgrid/plumgrid-nova,whitepages/nova,Metaswitch/calico-nova,spring-week-topos/nova-week,CloudServer/nova,tangfeixiong/nova,jianghuaw/nova,shootstar/novatest,blueboxgroup/nova,Juniper/nova,qwefi/nova,devendermishrajio/nova_test_latest,klmitch/nova,Francis-Liu/animated-broccoli,dstroppa/openstack-smartos-nova-grizzly,BeyondTheClouds/nova,silenceli/nova,mikalstill/nova,jeffrey4l/nova,maheshp/novatest,jianghuaw/nova,BeyondTheClouds/nova,akash1808/nova_test_latest,openstack/nova,vmturbo/nova,klmitch/nova,sacharya/nova,isyippee/nova,berrange/nova,varunarya10/nova_test_latest,isyippee/nova,Triv90/Nova,silenceli/nova,shootstar/novatest,thomasem/nova,hanlind/nova,takeshineshiro/nova,redhat-openstack/nova,shail2810/nova,projectcalico/calico-nova,akash1808/nova,tianweizhang/nova,CCI-MOC/nova,felixma/nova,watonyweng/nova,kimjaejoong/nova,yosshy/nova,ntt-sic/nova,mmnelemane/nova,eayunstack/nova,gspilio/nova,bigswitch/nova,whitepages/nova,maheshp/novatest,Metaswitch/calico-nova,dstroppa/openstack-smartos-nova-grizzly,belmiromoreira/nova,angdraug/nova,sebrandon1/nova,LoHChina/nova,mgagne/nova,alvarolopez/nova,Stavitsky/nova,spring-week-topos/nova-week,vladikr/nova_drafts,kimjaejoong/nova,dims/nova,Yusuke1987/openstack_template,virtualopensystems/nova,mahak/nova,sebrandon1/nova,TieWei/nova,jianghuaw/nova,zaina/nova,leilihh/nova,CiscoSystems/nova,double12gzh/nova,TwinkleChawla/nova,rajalokan/nova,rrader/nova-docker-plugin,j-carpentier/nova,Juniper/nova,DirectXMan12/nova-hacking,zaina/nova,eharney/nova,OpenAcademy-OpenStack/nova-scheduler,orbitfp7/nova,tudorvio/nova,virtualopensystems/nova,imsplitbit/nova,Juniper/nova,mmnelemane/nova,nikesh-mahalka/nova,noironetworks/nova,berrange/nova,joker946/nova,vmturbo/nova,viggates/nova,JioCloud/nova_test_latest,double12gzh/nova,sridevikoushik31/nova,rahulunair/nova,edulramirez/nova,Juniper/nova,JioCloud/nova,gspilio/nova,openstack/nova,SUSE-Cloud/nova,cloudbase/nova,blueboxgroup/nova,ted-gould/nova,raildo/nova,vmturbo/nova,rajalokan/nova,CEG-FYP-OpenStack/scheduler,cernops/nova,devoid/nova,tangfeixiong/nova,devendermishrajio/nova_test_latest,devendermishrajio/nova,maheshp/novatest,barnsnake351/nova,phenoxim/nova,cernops/nova,saleemjaveds/https-github.com-openstack-nova,cyx1231st/nova,MountainWei/nova,citrix-openstack-build/nova,ted-gould/nova,Yuriy-Leonov/nova,thomasem/nova,NeCTAR-RC/nova,tanglei528/nova,hanlind/nova,fnordahl/nova,dawnpower/nova,eharney/nova,zzicewind/nova,zzicewind/nova,TwinkleChawla/nova,fnordahl/nova,rickerc/nova_audit,rrader/nova-docker-plugin,gspilio/nova,jeffrey4l/nova,vladikr/nova_drafts,maelnor/nova,nikesh-mahalka/nova,SUSE-Cloud/nova,shahar-stratoscale/nova,alaski/nova,sridevikoushik31/nova,DirectXMan12/nova-hacking,viggates/nova,eonpatapon/nova,mikalstill/nova,noironetworks/nova,bgxavier/nova,Triv90/Nova,tealover/nova,mikalstill/nova,devendermishrajio/nova,affo/nova,alexandrucoman/vbox-nova-driver,apporc/nova,gooddata/openstack-nova,shahar-stratoscale/nova,cloudbau/nova,sacharya/nova,cyx1231st/nova,Yusuke1987/openstack_template,klmitch/nova,zhimin711/nova,jianghuaw/nova,watonyweng/nova,tianweizhang/nova,shail2810/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