New chunks were assigned with the TTL the request query implied while
the entry kept its own, so repacking a permanent file with ?ttl= made
its chunks expire under permanent metadata. Force the entry TTL onto
the storage option instead.
Filer.UpdateEntry only writes the store, so metadata subscribers never
heard about the new chunk ids while the old ones were queued for
deletion. Emit the update event the way the gRPC UpdateEntry path does.
Chris Lu
9cb7dc7204