Handle EtcdKeyNotFound from atomic delete methods.
Handle EtcdKeyNotFound from atomic delete methods.

Gets raised instead of ValueError if the key is not present at all.

neiljerram/felix,beddari/calico,ocadotechnology/calico,beddari/calico,anortef/calico,Metaswitch/calico,alexhersh/calico,TrimBiggs/calico,TrimBiggs/calico,anortef/calico,matthewdupre/felix,neiljerram/felix,alexhersh/calico,ocadotechnology/calico,kasisnu/calico,kasisnu/calico,matthewdupre/felix,neiljerram/felix,Metaswitch/calico,neiljerram/felix