Fix docstring on SnapshotController
Fix docstring on SnapshotController

Change-Id: I66a8b15ef700253bbad54ee3955550aeb2a522b7
Closes-Bug: #1257151

dims/nova,hanlind/nova,sebrandon1/nova,apporc/nova,saleemjaveds/https-github.com-openstack-nova,devendermishrajio/nova_test_latest,petrutlucian94/nova,mgagne/nova,dawnpower/nova,rahulunair/nova,akash1808/nova,luogangyi/bcec-nova,devendermishrajio/nova,vmturbo/nova,orbitfp7/nova,bgxavier/nova,JianyuWang/nova,rahulunair/nova,fnordahl/nova,badock/nova,virtualopensystems/nova,noironetworks/nova,cloudbase/nova,tanglei528/nova,vmturbo/nova,OpenAcademy-OpenStack/nova-scheduler,CloudServer/nova,j-carpentier/nova,mahak/nova,devoid/nova,TwinkleChawla/nova,thomasem/nova,Juniper/nova,ted-gould/nova,Juniper/nova,rajalokan/nova,joker946/nova,CiscoSystems/nova,zaina/nova,ewindisch/nova,cernops/nova,takeshineshiro/nova,JioCloud/nova_test_latest,Metaswitch/calico-nova,jianghuaw/nova,zzicewind/nova,OpenAcademy-OpenStack/nova-scheduler,Stavitsky/nova,viggates/nova,adelina-t/nova,mmnelemane/nova,scripnichenko/nova,akash1808/nova_test_latest,cloudbase/nova-virtualbox,j-carpentier/nova,spring-week-topos/nova-week,Tehsmash/nova,thomasem/nova,iuliat/nova,dawnpower/nova,barnsnake351/nova,ewindisch/nova,alvarolopez/nova,alexandrucoman/vbox-nova-driver,MountainWei/nova,petrutlucian94/nova,Tehsmash/nova,nikesh-mahalka/nova,CloudServer/nova,raildo/nova,eharney/nova,sebrandon1/nova,eayunstack/nova,saleemjaveds/https-github.com-openstack-nova,mahak/nova,isyippee/nova,devoid/nova,watonyweng/nova,LoHChina/nova,BeyondTheClouds/nova,spring-week-topos/nova-week,Stavitsky/nova,BeyondTheClouds/nova,leilihh/nova,silenceli/nova,berrange/nova,sacharya/nova,yosshy/nova,mikalstill/nova,zhimin711/nova,mikalstill/nova,CiscoSystems/nova,eharney/nova,berrange/nova,sacharya/nova,maelnor/nova,vladikr/nova_drafts,JianyuWang/nova,noironetworks/nova,whitepages/nova,JioCloud/nova,edulramirez/nova,takeshineshiro/nova,klmitch/nova,gooddata/openstack-nova,mahak/nova,cernops/nova,redhat-openstack/nova,double12gzh/nova,nikesh-mahalka/nova,whitepages/nova,mikalstill/nova,CEG-FYP-OpenStack/scheduler,alexandrucoman/vbox-nova-driver,rajalokan/nova,tudorvio/nova,yosshy/nova,Yusuke1987/openstack_template,alvarolopez/nova,klmitch/nova,bgxavier/nova,zaina/nova,vmturbo/nova,barnsnake351/nova,openstack/nova,Francis-Liu/animated-broccoli,shail2810/nova,Juniper/nova,yatinkumbhare/openstack-nova,angdraug/nova,hanlind/nova,felixma/nova,tudorvio/nova,akash1808/nova,angdraug/nova,LoHChina/nova,raildo/nova,adelina-t/nova,felixma/nova,varunarya10/nova_test_latest,sebrandon1/nova,Juniper/nova,vladikr/nova_drafts,luogangyi/bcec-nova,rrader/nova-docker-plugin,yatinkumbhare/openstack-nova,gooddata/openstack-nova,jeffrey4l/nova,bigswitch/nova,belmiromoreira/nova,fnordahl/nova,edulramirez/nova,rahulunair/nova,TwinkleChawla/nova,virtualopensystems/nova,watonyweng/nova,dims/nova,joker946/nova,JioCloud/nova_test_latest,Yusuke1987/openstack_template,kimjaejoong/nova,phenoxim/nova,silenceli/nova,badock/nova,mandeepdhami/nova,MountainWei/nova,CEG-FYP-OpenStack/scheduler,iuliat/nova,tealover/nova,tianweizhang/nova,jianghuaw/nova,mgagne/nova,cyx1231st/nova,Francis-Liu/animated-broccoli,tangfeixiong/nova,orbitfp7/nova,openstack/nova,ruslanloman/nova,projectcalico/calico-nova,devendermishrajio/nova,alaski/nova,varunarya10/nova_test_latest,eonpatapon/nova,tianweizhang/nova,tealover/nova,affo/nova,viggates/nova,rajalokan/nova,redhat-openstack/nova,jianghuaw/nova,klmitch/nova,ted-gould/nova,leilihh/novaha,cyx1231st/nova,Metaswitch/calico-nova,JioCloud/nova,vmturbo/nova,shahar-stratoscale/nova,eayunstack/nova,phenoxim/nova,maelnor/nova,ruslanloman/nova,cloudbase/nova,gooddata/openstack-nova,leilihh/nova,zzicewind/nova,akash1808/nova_test_latest,BeyondTheClouds/nova,rajalokan/nova,NeCTAR-RC/nova,CCI-MOC/nova,bigswitch/nova,tangfeixiong/nova,belmiromoreira/nova,openstack/nova,NeCTAR-RC/nova,alaski/nova,rrader/nova-docker-plugin,devendermishrajio/nova_test_latest,apporc/nova,gooddata/openstack-nova,isyippee/nova,jeffrey4l/nova,scripnichenko/nova,projectcalico/calico-nova,affo/nova,CCI-MOC/nova,shail2810/nova,cloudbase/nova-virtualbox,kimjaejoong/nova,mmnelemane/nova,shahar-stratoscale/nova,petrutlucian94/nova_dev,jianghuaw/nova,double12gzh/nova,mandeepdhami/nova,klmitch/nova,cernops/nova,hanlind/nova,eonpatapon/nova,leilihh/novaha,tanglei528/nova,cloudbase/nova,petrutlucian94/nova_dev,blueboxgroup/nova,zhimin711/nova,blueboxgroup/nova