Adding revised version of lustre_operator script
Added check whether setquota would put user/group over quota and requires
a force option to actually set quota in that case.
Added copyright/license header, updated usage statements.
Created POD documentation and changed usage output generation to use pod2usage.
Added human-readable output to lustre_operator quota.  Broke setquota and find temporarily.
Checking in initial version of split-by-cols.pl
Added human unit conversion for grace time. Added lfs_bin as
first argument (to assist with testing).
fixed permission denied from lfs_bin in get_quota
Added filesystem and user/group to error output when lfs quota command fails
Changed quota subcommand name to getquota
Added remaining size and inode to getquota output
Removed non-lustre operator script
Refactored main into getquota_main, setquota_main, find_main
Added format for spacesv (space-separated values)
Got rid of explicit *_custom formats, specifying any -c options will put output in custom mode
Implemented custom column selection for json format
Added exec_lfs_pipe_open to wrap up exec_lfs in the "Safe Pipe Open"
Changed lfs_get_quota and lfs_set_quota to use exec_lfs_pipe_open
Merge branch 'master' of https://github.com/wtsi-hgi/lustre_operator