Convert generator to list in Heat list API call
Convert generator to list in Heat list API call

The generator being returned by heatclient didn't like
being iterated multiple times (as when doing a multiple
delete through the stacks table).

Fixes bug #1224393

Change-Id: I01482c0fadcf145fe99806983d9a1dc6f50ac56a

watonyweng/horizon,vladryk/horizon,bac/horizon,redhat-openstack/horizon,yeming233/horizon,BiznetGIO/horizon,vladryk/horizon,NCI-Cloud/horizon,gerrive/horizon,openstack/horizon,NeCTAR-RC/horizon,tsufiev/horizon,yeming233/horizon,noironetworks/horizon,Solinea/horizon,mandeepdhami/horizon,redhat-cip/horizon,eayunstack/horizon,watonyweng/horizon,BiznetGIO/horizon,sandvine/horizon,xme1226/horizon,henaras/horizon,tsufiev/horizon,RudoCris/horizon,flochaz/horizon,CiscoSystems/avos,vladryk/horizon,tellesnobrega/horizon,xinwu/horizon,bac/horizon,yanheven/console,liyitest/rr,tellesnobrega/horizon,davidcusatis/horizon,Metaswitch/horizon,nvoron23/avos,wolverineav/horizon,idjaw/horizon,j4/horizon,Metaswitch/horizon,promptworks/horizon,Mirantis/mos-horizon,philoniare/horizon,liyitest/rr,promptworks/horizon,tellesnobrega/horizon,openstack/horizon,FNST-OpenStack/horizon,henaras/horizon,Solinea/horizon,Tesora/tesora-horizon,tqtran7/horizon,JioCloud/horizon,philoniare/horizon,tanglei528/horizon,zouyapeng/horizon,gerrive/horizon,endorphinl/horizon-fork,pranavtendolkr/horizon,NCI-Cloud/horizon,philoniare/horizon,CiscoSystems/avos,xme1226/horizon,Hodorable/0602,takeshineshiro/horizon,pranavtendolkr/horizon,dan1/horizon-x509,icloudrnd/automation_tools,mdavid/horizon,yanheven/console,luhanhan/horizon,eayunstack/horizon,froyobin/horizon,takeshineshiro/horizon,xinwu/horizon,froyobin/horizon,Solinea/horizon,Dark-Hacker/horizon,Tesora/tesora-horizon,watonyweng/horizon,mrunge/openstack_horizon,ikargis/horizon_fod,Hodorable/0602,damien-dg/horizon,blueboxgroup/horizon,tanglei528/horizon,xinwu/horizon,Metaswitch/horizon,bigswitch/horizon,damien-dg/horizon,saydulk/horizon,newrocknj/horizon,coreycb/horizon,kaiweifan/horizon,Dark-Hacker/horizon,ikargis/horizon_fod,dan1/horizon-x509,citrix-openstack-build/horizon,Tesora/tesora-horizon,zouyapeng/horizon,BiznetGIO/horizon,karthik-suresh/horizon,idjaw/horizon,zouyapeng/horizon,mrunge/horizon,pranavtendolkr/horizon,openstack/horizon,rickerc/horizon_audit,redhat-cip/horizon,maestro-hybrid-cloud/horizon,nvoron23/avos,promptworks/horizon,rickerc/horizon_audit,henaras/horizon,j4/horizon,redhat-cip/horizon,luhanhan/horizon,coreycb/horizon,blueboxgroup/horizon,mrunge/openstack_horizon,redhat-openstack/horizon,flochaz/horizon,j4/horizon,endorphinl/horizon,tqtran7/horizon,wolverineav/horizon,karthik-suresh/horizon,wolverineav/horizon,ging/horizon,saydulk/horizon,BiznetGIO/horizon,zouyapeng/horizon,doug-fish/horizon,idjaw/horizon,damien-dg/horizon,VaneCloud/horizon,icloudrnd/automation_tools,FNST-OpenStack/horizon,CiscoSystems/horizon,tsufiev/horizon,Dark-Hacker/horizon,blueboxgroup/horizon,icloudrnd/automation_tools,CiscoSystems/horizon,dan1/horizon-x509,eayunstack/horizon,CiscoSystems/avos,bac/horizon,wolverineav/horizon,NCI-Cloud/horizon,NeCTAR-RC/horizon,newrocknj/horizon,NeCTAR-RC/horizon,doug-fish/horizon,maestro-hybrid-cloud/horizon,Mirantis/mos-horizon,liyitest/rr,bac/horizon,mrunge/openstack_horizon,django-leonardo/horizon,anthonydillon/horizon,VaneCloud/horizon,kfox1111/horizon,orbitfp7/horizon,gerrive/horizon,Daniex/horizon,Tesora/tesora-horizon,kfox1111/horizon,rickerc/horizon_audit,FNST-OpenStack/horizon,tsufiev/horizon,liyitest/rr,watonyweng/horizon,wangxiangyu/horizon,spring-week-topos/horizon-week,doug-fish/horizon,coreycb/horizon,NCI-Cloud/horizon,flochaz/horizon,agileblaze/OpenStackTwoFactorAuthentication,blueboxgroup/horizon,aaronorosen/horizon-congress,promptworks/horizon,gochist/horizon,spring-week-topos/horizon-week,ikargis/horizon_fod,ChameleonCloud/horizon,bigswitch/horizon,RudoCris/horizon,tanglei528/horizon,coreycb/horizon,luhanhan/horizon,philoniare/horizon,aaronorosen/horizon-congress,icloudrnd/automation_tools,gochist/horizon,yjxtogo/horizon,maestro-hybrid-cloud/horizon,wangxiangyu/horizon,takeshineshiro/horizon,damien-dg/horizon,endorphinl/horizon-fork,yjxtogo/horizon,davidcusatis/horizon,noironetworks/horizon,mandeepdhami/horizon,xinwu/horizon,vladryk/horizon,davidcusatis/horizon,saydulk/horizon,mdavid/horizon,agileblaze/OpenStackTwoFactorAuthentication,anthonydillon/horizon,yjxtogo/horizon,wangxiangyu/horizon,NeCTAR-RC/horizon,noironetworks/horizon,ChameleonCloud/horizon,anthonydillon/horizon,Daniex/horizon,ging/horizon,kaiweifan/horizon,pranavtendolkr/horizon,froyobin/horizon,idjaw/horizon,newrocknj/horizon,ChameleonCloud/horizon,mrunge/horizon,orbitfp7/horizon,xme1226/horizon,redhat-openstack/horizon,ging/horizon,endorphinl/horizon,luhanhan/horizon,endorphinl/horizon,nvoron23/avos,CiscoSystems/avos,mdavid/horizon,JioCloud/horizon,mrunge/horizon_lib,FNST-OpenStack/horizon,JioCloud/horizon,Daniex/horizon,citrix-openstack-build/horizon,aaronorosen/horizon-congress,mdavid/horizon,takeshineshiro/horizon,endorphinl/horizon-fork,yjxtogo/horizon,nvoron23/avos,sandvine/horizon,spring-week-topos/horizon-week,mandeepdhami/horizon,maestro-hybrid-cloud/horizon,j4/horizon,izadorozhna/dashboard_integration_tests,Metaswitch/horizon,davidcusatis/horizon,VaneCloud/horizon,gerrive/horizon,CiscoSystems/horizon,Hodorable/0602,henaras/horizon,kfox1111/horizon,mrunge/horizon,sandvine/horizon,mandeepdhami/horizon,dan1/horizon-proto,dan1/horizon-x509,endorphinl/horizon-fork,dan1/horizon-proto,noironetworks/horizon,dan1/horizon-proto,yanheven/console,agileblaze/OpenStackTwoFactorAuthentication,Solinea/horizon,Mirantis/mos-horizon,Mirantis/mos-horizon,redhat-openstack/horizon,Daniex/horizon,agileblaze/OpenStackTwoFactorAuthentication,django-leonardo/horizon,endorphinl/horizon,mrunge/horizon_lib,kfox1111/horizon,Hodorable/0602,ChameleonCloud/horizon,anthonydillon/horizon,redhat-cip/horizon,saydulk/horizon,bigswitch/horizon,newrocknj/horizon,openstack/horizon,RudoCris/horizon,VaneCloud/horizon,dan1/horizon-proto,django-leonardo/horizon,orbitfp7/horizon,django-leonardo/horizon,tellesnobrega/horizon,tqtran7/horizon,wangxiangyu/horizon,sandvine/horizon,orbitfp7/horizon,karthik-suresh/horizon,mrunge/horizon_lib,karthik-suresh/horizon,izadorozhna/dashboard_integration_tests,yeming233/horizon,kaiweifan/horizon,tqtran7/horizon,flochaz/horizon,ging/horizon,yeming233/horizon,gochist/horizon,citrix-openstack-build/horizon,CiscoSystems/horizon,bigswitch/horizon,Dark-Hacker/horizon,doug-fish/horizon,RudoCris/horizon