_s3_create handles image being deleted
_s3_create handles image being deleted

Change so _s3_create handles the image it is creating
being deleted while it is creating it without logging a stacktrace
and instead just logging a simple message explaining what happened.

Fixes bug 1084703

Change-Id: I9d984dd1cf4f393010493cacd048d20ad5225db8

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