Comment 2 for bug 1208610

So back during the OpenStack Summit in HK the idea was brought up that we should just specify using the same grammar as rsync for doing this. See these links for examples of this:

http://www.thegeekstuff.com/2011/01/rsync-exclude-files-and-folders/

and the man page:

http://linux.die.net/man/1/rsync

I think this section is probably the relevant portion(at least part of it):

-F same as --filter='dir-merge /.rsync-filter'
                             repeated: --filter='- .rsync-filter'
     --exclude=PATTERN exclude files matching PATTERN
     --exclude-from=FILE read exclude patterns from FILE
     --include=PATTERN don't exclude files matching PATTERN
     --include-from=FILE read include patterns from FILE
     --files-from=FILE read list of source-file names from FILE