Don't pass empty action strings to ceilometer
Don't pass empty action strings to ceilometer

Note: this only really happens when using the cloud watch
resource template.

Partial-bug: #1373247
Change-Id: I084d28dfbbd0f2d7a6a18a09600f86880fa394d5

cryptickp/heat,takeshineshiro/heat,dragorosson/heat,rdo-management/heat,maestro-hybrid-cloud/heat,openstack/heat,openstack/heat,srznew/heat,srznew/heat,redhat-openstack/heat,cryptickp/heat,miguelgrinberg/heat,pratikmallya/heat,takeshineshiro/heat,dims/heat,dragorosson/heat,pshchelo/heat,cwolferh/heat-scratch,steveb/heat,redhat-openstack/heat,maestro-hybrid-cloud/heat,noironetworks/heat,pshchelo/heat,dims/heat,jasondunsmore/heat,rdo-management/heat,rh-s/heat,cwolferh/heat-scratch,jasondunsmore/heat,pratikmallya/heat,rh-s/heat,gonzolino/heat,miguelgrinberg/heat,noironetworks/heat,steveb/heat,gonzolino/heat