Bug #835952: pep8 failures do not cause the tests to fail 
Bug #835952: pep8 failures do not cause the tests to fail 

Add set -eu to run_tests.sh.  This will cause it to fail whenever anything
goes wrong, which is exactly what we want in a test script.

To do this, I had to remove the use of the "let" keyword, which has a bizarre
exit status in bash.

I also removed the "|| exit" after run_tests, which means that this script
will now exit with status 1, not status 0, if run_tests fails.

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