Additional logging for failed collection clone during resync.

During an initial sync we can fail to clone a collection from the sync source. The messages logged are as follows.

YYYY-MM-DDTHH:MM:SSZ I REPL [repl writer worker 1] Finished cloning data: InitialSyncFailure: Failed to clone 1 collection(s) in 'DBNAME' from HOST:PORT. Beginning oplog replay.

To improve diagnostics it would be a good idea to log the collection name that failed.