Remove useless policy rule from fake_policy.py
Remove useless policy rule from fake_policy.py

This patch remove some policy rules from fake_policy.py which never used
in nova code. Also remove some 'discovery' entries which used by v2.1 extensions,
as v2.1 extensions will be removed later.

Change-Id: Ia15733208b058194200d01447a69f54f58643260

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