Throw a warning message when failed to get pool detail
Throw a warning message when failed to get pool detail

When subnet associated to a pool deleted, the pool detail page will
throw an exception. Fix the problem by showing a warning message
when failed to get the expand resources for the pool.

Change-Id: I9f853505db625527de69c8f620b988e6e42a4339
Closes-bug: #1406879

maestro-hybrid-cloud/horizon,orbitfp7/horizon,saydulk/horizon,dan1/horizon-proto,agileblaze/OpenStackTwoFactorAuthentication,wolverineav/horizon,mdavid/horizon,NCI-Cloud/horizon,kfox1111/horizon,maestro-hybrid-cloud/horizon,Metaswitch/horizon,bigswitch/horizon,tsufiev/horizon,luhanhan/horizon,vladryk/horizon,luhanhan/horizon,endorphinl/horizon,vladryk/horizon,RudoCris/horizon,henaras/horizon,davidcusatis/horizon,tellesnobrega/horizon,Solinea/horizon,mandeepdhami/horizon,j4/horizon,endorphinl/horizon-fork,redhat-openstack/horizon,mandeepdhami/horizon,BiznetGIO/horizon,liyitest/rr,coreycb/horizon,wolverineav/horizon,blueboxgroup/horizon,izadorozhna/dashboard_integration_tests,watonyweng/horizon,endorphinl/horizon-fork,coreycb/horizon,promptworks/horizon,Daniex/horizon,newrocknj/horizon,bigswitch/horizon,VaneCloud/horizon,ChameleonCloud/horizon,tqtran7/horizon,CiscoSystems/horizon,Mirantis/mos-horizon,promptworks/horizon,bac/horizon,redhat-cip/horizon,xinwu/horizon,vladryk/horizon,django-leonardo/horizon,yeming233/horizon,NCI-Cloud/horizon,sandvine/horizon,doug-fish/horizon,tqtran7/horizon,Hodorable/0602,Daniex/horizon,Mirantis/mos-horizon,xinwu/horizon,mandeepdhami/horizon,philoniare/horizon,bac/horizon,j4/horizon,blueboxgroup/horizon,takeshineshiro/horizon,dan1/horizon-x509,j4/horizon,tqtran7/horizon,Tesora/tesora-horizon,karthik-suresh/horizon,coreycb/horizon,agileblaze/OpenStackTwoFactorAuthentication,mdavid/horizon,watonyweng/horizon,idjaw/horizon,FNST-OpenStack/horizon,gerrive/horizon,noironetworks/horizon,kfox1111/horizon,liyitest/rr,pranavtendolkr/horizon,mandeepdhami/horizon,mdavid/horizon,tqtran7/horizon,maestro-hybrid-cloud/horizon,j4/horizon,Tesora/tesora-horizon,watonyweng/horizon,Solinea/horizon,NCI-Cloud/horizon,RudoCris/horizon,sandvine/horizon,mdavid/horizon,BiznetGIO/horizon,wangxiangyu/horizon,newrocknj/horizon,NeCTAR-RC/horizon,vladryk/horizon,saydulk/horizon,agileblaze/OpenStackTwoFactorAuthentication,yjxtogo/horizon,tsufiev/horizon,doug-fish/horizon,yeming233/horizon,CiscoSystems/horizon,maestro-hybrid-cloud/horizon,xinwu/horizon,eayunstack/horizon,orbitfp7/horizon,Hodorable/0602,Daniex/horizon,wolverineav/horizon,saydulk/horizon,Solinea/horizon,RudoCris/horizon,orbitfp7/horizon,watonyweng/horizon,dan1/horizon-proto,icloudrnd/automation_tools,ChameleonCloud/horizon,icloudrnd/automation_tools,blueboxgroup/horizon,Metaswitch/horizon,RudoCris/horizon,coreycb/horizon,henaras/horizon,ChameleonCloud/horizon,yeming233/horizon,philoniare/horizon,wangxiangyu/horizon,philoniare/horizon,gerrive/horizon,promptworks/horizon,endorphinl/horizon-fork,pranavtendolkr/horizon,bac/horizon,redhat-cip/horizon,tellesnobrega/horizon,takeshineshiro/horizon,NeCTAR-RC/horizon,Dark-Hacker/horizon,tsufiev/horizon,Dark-Hacker/horizon,sandvine/horizon,BiznetGIO/horizon,henaras/horizon,yjxtogo/horizon,redhat-openstack/horizon,xinwu/horizon,Metaswitch/horizon,Solinea/horizon,henaras/horizon,Hodorable/0602,newrocknj/horizon,dan1/horizon-proto,idjaw/horizon,takeshineshiro/horizon,tellesnobrega/horizon,wangxiangyu/horizon,davidcusatis/horizon,dan1/horizon-proto,blueboxgroup/horizon,endorphinl/horizon,Tesora/tesora-horizon,openstack/horizon,karthik-suresh/horizon,FNST-OpenStack/horizon,ChameleonCloud/horizon,yjxtogo/horizon,tellesnobrega/horizon,noironetworks/horizon,Tesora/tesora-horizon,karthik-suresh/horizon,damien-dg/horizon,luhanhan/horizon,FNST-OpenStack/horizon,Dark-Hacker/horizon,doug-fish/horizon,anthonydillon/horizon,davidcusatis/horizon,openstack/horizon,Mirantis/mos-horizon,VaneCloud/horizon,damien-dg/horizon,pranavtendolkr/horizon,dan1/horizon-x509,damien-dg/horizon,NeCTAR-RC/horizon,kfox1111/horizon,endorphinl/horizon-fork,Mirantis/mos-horizon,tsufiev/horizon,anthonydillon/horizon,redhat-openstack/horizon,dan1/horizon-x509,icloudrnd/automation_tools,endorphinl/horizon,NCI-Cloud/horizon,gerrive/horizon,bigswitch/horizon,idjaw/horizon,liyitest/rr,Daniex/horizon,icloudrnd/automation_tools,wangxiangyu/horizon,anthonydillon/horizon,VaneCloud/horizon,promptworks/horizon,eayunstack/horizon,django-leonardo/horizon,noironetworks/horizon,idjaw/horizon,Hodorable/0602,redhat-openstack/horizon,kfox1111/horizon,bac/horizon,gerrive/horizon,damien-dg/horizon,karthik-suresh/horizon,pranavtendolkr/horizon,orbitfp7/horizon,CiscoSystems/horizon,redhat-cip/horizon,dan1/horizon-x509,Metaswitch/horizon,davidcusatis/horizon,izadorozhna/dashboard_integration_tests,openstack/horizon,Dark-Hacker/horizon,doug-fish/horizon,redhat-cip/horizon,VaneCloud/horizon,openstack/horizon,philoniare/horizon,anthonydillon/horizon,newrocknj/horizon,takeshineshiro/horizon,django-leonardo/horizon,BiznetGIO/horizon,CiscoSystems/horizon,eayunstack/horizon,yeming233/horizon,luhanhan/horizon,bigswitch/horizon,agileblaze/OpenStackTwoFactorAuthentication,sandvine/horizon,endorphinl/horizon,saydulk/horizon,django-leonardo/horizon,noironetworks/horizon,NeCTAR-RC/horizon,wolverineav/horizon,yjxtogo/horizon,liyitest/rr,FNST-OpenStack/horizon