Add example with return values in API v2 docs
Add example with return values in API v2 docs

Add a "real" example of a groupby statistics query with return
values in API v2 documentation.

The example is taken from an actual query run on a machine
running Devstack and Ceilometer.

Addresses bug # 1228465

Change-Id: I0414fdaf31ca365f0404c77504d4106de7c17f74

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