cmd/storeserver: enable logs flag
cmd/storeserver: enable logs flag

Change-Id: I4a055fb0ee552b19f47ab7f6fb763e729025deee
Reviewed-on: https://upspin-review.googlesource.com/4264
Reviewed-by: Andrew Gerrand <395a7d33bec8475c9b83b7d440f141bcbd994aa5@google.com>

upspin/upspin,upspin/upspin