DHT: Support removing a repository name

The first step to deleting a repository from the DHT storage is to
remove the name binding in the RepositoryIndexTable, making the
repository unavailable for lookup.

Change-Id: I469bf92f4bf2f555a15949569b21937c14cb142b
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
3 files changed