Add serialization of context to FakeNotifier
Add serialization of context to FakeNotifier

Currently, the FakeNotifier doesn't do anything to check the context
that will be serialized when the RPC call is made. This change adds
a call to serialize the context to prevent bugs related to the
context passed in to send the notification.

Related-Bug: #1360911

Change-Id: I905f8421bc8e34c52b779d65a88d1ebf044f4dd1

sebrandon1/nova,klmitch/nova,felixma/nova,mikalstill/nova,varunarya10/nova_test_latest,eonpatapon/nova,tudorvio/nova,akash1808/nova_test_latest,JioCloud/nova,phenoxim/nova,alvarolopez/nova,MountainWei/nova,barnsnake351/nova,BeyondTheClouds/nova,ted-gould/nova,tealover/nova,isyippee/nova,gooddata/openstack-nova,watonyweng/nova,noironetworks/nova,bigswitch/nova,dawnpower/nova,NeCTAR-RC/nova,JioCloud/nova_test_latest,ted-gould/nova,MountainWei/nova,openstack/nova,mandeepdhami/nova,bgxavier/nova,yosshy/nova,shail2810/nova,barnsnake351/nova,petrutlucian94/nova,ruslanloman/nova,nikesh-mahalka/nova,hanlind/nova,Juniper/nova,mandeepdhami/nova,cloudbase/nova,jianghuaw/nova,vmturbo/nova,devendermishrajio/nova_test_latest,scripnichenko/nova,fnordahl/nova,JioCloud/nova_test_latest,felixma/nova,JianyuWang/nova,zzicewind/nova,klmitch/nova,adelina-t/nova,devendermishrajio/nova,rajalokan/nova,j-carpentier/nova,belmiromoreira/nova,devendermishrajio/nova,zaina/nova,mahak/nova,vmturbo/nova,mikalstill/nova,mmnelemane/nova,cernops/nova,sebrandon1/nova,yosshy/nova,blueboxgroup/nova,Juniper/nova,devendermishrajio/nova_test_latest,mahak/nova,double12gzh/nova,jeffrey4l/nova,alaski/nova,bgxavier/nova,edulramirez/nova,rajalokan/nova,vmturbo/nova,zhimin711/nova,gooddata/openstack-nova,BeyondTheClouds/nova,klmitch/nova,eonpatapon/nova,scripnichenko/nova,akash1808/nova_test_latest,alvarolopez/nova,double12gzh/nova,CloudServer/nova,Juniper/nova,Francis-Liu/animated-broccoli,petrutlucian94/nova,hanlind/nova,dawnpower/nova,shail2810/nova,Juniper/nova,joker946/nova,jianghuaw/nova,ruslanloman/nova,LoHChina/nova,yatinkumbhare/openstack-nova,jianghuaw/nova,cloudbase/nova,dims/nova,blueboxgroup/nova,sebrandon1/nova,cernops/nova,tudorvio/nova,openstack/nova,yatinkumbhare/openstack-nova,kimjaejoong/nova,Francis-Liu/animated-broccoli,rahulunair/nova,gooddata/openstack-nova,tangfeixiong/nova,mahak/nova,rahulunair/nova,CEG-FYP-OpenStack/scheduler,fnordahl/nova,phenoxim/nova,whitepages/nova,TwinkleChawla/nova,noironetworks/nova,j-carpentier/nova,zaina/nova,vmturbo/nova,joker946/nova,hanlind/nova,TwinkleChawla/nova,alaski/nova,tealover/nova,CloudServer/nova,dims/nova,isyippee/nova,Stavitsky/nova,LoHChina/nova,iuliat/nova,alexandrucoman/vbox-nova-driver,thomasem/nova,bigswitch/nova,JianyuWang/nova,apporc/nova,nikesh-mahalka/nova,kimjaejoong/nova,BeyondTheClouds/nova,whitepages/nova,cloudbase/nova,mikalstill/nova,watonyweng/nova,takeshineshiro/nova,raildo/nova,takeshineshiro/nova,gooddata/openstack-nova,JioCloud/nova,zhimin711/nova,CCI-MOC/nova,rajalokan/nova,alexandrucoman/vbox-nova-driver,akash1808/nova,Stavitsky/nova,rajalokan/nova,cyx1231st/nova,apporc/nova,cyx1231st/nova,thomasem/nova,cernops/nova,NeCTAR-RC/nova,belmiromoreira/nova,jeffrey4l/nova,iuliat/nova,jianghuaw/nova,zzicewind/nova,rahulunair/nova,CCI-MOC/nova,Tehsmash/nova,CEG-FYP-OpenStack/scheduler,adelina-t/nova,akash1808/nova,Tehsmash/nova,raildo/nova,varunarya10/nova_test_latest,klmitch/nova,openstack/nova,mmnelemane/nova,tangfeixiong/nova,edulramirez/nova