remove superfluous archiveUrl.

It is sufficient if this is added by the packing node as soon as needed.
add container.conf

The container.conf file is the global configuration containing
general options like the hsm subdirectory, database url, etc
and sections for directories that contain small files together
with specific options.
update dcache
update container.conf format
update hsm-internal to use pnfsid to unpack instead of chimera path