LUDOC-296 protocol: remove internal details from descriptions

LUDOC-296 protocol: remove internal details from descriptions

[2015-07-09]
Tidy up some of the details in the removal of the implementation
details.

[2015-07-08]
Remove the internal implementation details from descriptions, in
particular for obd_import and obd_export.  Some fields in those
structures will be useful in the future to describe the connection
state machine, but are commented out for now.

Remove the lustre_file_ids.txt file, since it largely duplicated
the file-id.txt file.

Change-Id: I79f499fa16af80b237706535b185c39ea40e7b3f
Signed-off-by: Andreas Dilger <andreas.dilger@intel.com>
Signed-off-by: Andrew C. Uselton <andrew.c.uselton@intel.com>
Reviewed-on: http://review.whamcloud.com/15543
Tested-by: Jenkins