Enhance policy test for init()
Enhance policy test for init()

As suggested by Doug, let's write real data and see if they were read.

Change-Id: If709b36634b4352ce7e5a3d40b58bfba0f9ae91d
Signed-off-by: Julien Danjou <5c682c2d1ec4073e277f9ba9f4bdf07e5794dabe@danjou.info>

shootstar/ctest,r-mibu/ceilometer,NeCTAR-RC/ceilometer,NeCTAR-RC/ceilometer,openstack/ceilometer,chungg/aodh,idegtiarov/ceilometer,NeCTAR-RC/ceilometer,shootstar/ctest,cernops/ceilometer,openstack/aodh,rackerlabs/instrumented-ceilometer,luogangyi/Ceilometer-oVirt,mathslinux/ceilometer,luogangyi/Ceilometer-oVirt,pkilambi/ceilometer,redhat-openstack/ceilometer,redhat-openstack/ceilometer,maestro-hybrid-cloud/ceilometer,tanglei528/ceilometer,idegtiarov/ceilometer,rickerc/ceilometer_audit,dreamhost/ceilometer,citrix-openstack-build/ceilometer,rickerc/ceilometer_audit,isyippee/ceilometer,citrix-openstack-build/ceilometer,fabian4/ceilometer,Juniper/ceilometer,MisterPup/Ceilometer-Juno-Extension,JioCloud/ceilometer,ityaptin/ceilometer,Juniper/ceilometer,cernops/ceilometer,pczerkas/aodh,rackerlabs/instrumented-ceilometer,openstack/ceilometer,tanglei528/ceilometer,rickerc/ceilometer_audit,mathslinux/ceilometer,ityaptin/ceilometer,eayunstack/ceilometer,rackerlabs/instrumented-ceilometer,dreamhost/ceilometer,pkilambi/ceilometer,maestro-hybrid-cloud/ceilometer,fabian4/ceilometer,JioCloud/ceilometer,froyobin/ceilometer,pczerkas/aodh,m1093782566/openstack_org_ceilometer,tanglei528/ceilometer,MisterPup/Ceilometer-Juno-Extension,JioCloud/ceilometer,openstack/aodh,sileht/aodh,froyobin/ceilometer,eayunstack/ceilometer,sileht/aodh,citrix-openstack-build/ceilometer,chungg/aodh,isyippee/ceilometer,m1093782566/openstack_org_ceilometer,r-mibu/ceilometer