Fix boot with image not active
Fix boot with image not active

When boot with image which is not active, nova API response
with http status code 500. We should catch the exception and
raise HTTPBadRequest with more precise information.

Fix LP# 1108645

Change-Id: Ibd78f4b96bfdb925b03d7809d4e28afcc7e1ddcf

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