InstanceNotFound exceptions for terminate_intance now Log warning instead of throwing exeptions.
InstanceNotFound exceptions for terminate_intance now Log warning
instead of throwing exeptions.

fixes bug 933012

Change-Id: Ib6c6c33e26125b561bd5a1bc1e710016746e7e44

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