Description of problem:

New option to glusterfind to generate rsync ready output file, so that we can avoid post processing.

For example,

    glusterfind pre backup homegfs ~/out.txt --outfile-rsync

Then you can use rsync as

    rsync -0 --files-from=~/out.txt SRC/ DEST/

Note: -0 is required since outfile is delimited by \0 instead of new line.