Add logging to report cluster used to start build in orchestrate build
Add logging to report cluster used to start build in orchestrate build

Signed-off-by: Bret Fontecchio <89cf42a98117f05dbfcf6db5e2472ffff87a3f44@redhat.com>

projectatomic/atomic-reactor,DBuildService/atomic-reactor,vrutkovs/atomic-reactor,fr34k8/atomic-reactor,fr34k8/atomic-reactor,vrutkovs/atomic-reactor,DBuildService/atomic-reactor,projectatomic/atomic-reactor