Map exceptions to 404 / 403 codes, as was done before the move to twisted. However, I don't think this is the right way to do this in Twisted.  For example, exceptions thrown after the render method returns will not be mapped
Map exceptions to 404 / 403 codes, as was done before the move to twisted.
However, I don't think this is the right way to do this in Twisted.  For example, exceptions thrown after the render method returns will not be mapped

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