Also log provider name when debugging deletes.
Also log provider name when debugging deletes.

This helps us identify why a node might be in state for a long time.

Change-Id: I81dc7e4a033dff46111e98be957cbe5d1ac3872c

seandst/nodepool,seandst/nodepool,Tesora/tesora-nodepool,Tesora/tesora-nodepool,citrix-openstack/nodepool,citrix-openstack/nodepool