Protect deleteNode from missing images
Protect deleteNode from missing images

If an image is missing from config, don't make node deletion fail
just for the sake of stats.

Change-Id: I66bc8956a5ca65f27faaa2e70d0448edb3bd5b74

Tesora/tesora-nodepool,seandst/nodepool,Tesora/tesora-nodepool,seandst/nodepool