update chef defn for open source software work
update chef defn for open source software work

in Chef-15 the binstubs are going to live in spec/support/bin and not be shipped
with the gem, so omnibus needs to place them back in.

this is written to be backcompatible with Chef-14 via just looking for
the presence of the files or not.

Signed-off-by: Lamont Granquist <0ab8dc438f73addc98d9ad5925ec8f2b97991703@scriptkiddie.org>

aerobase/omnibus-software,chef/omnibus-software,mattray/omnibus-software,chef/omnibus-software,chef/omnibus-software,higanworks/omnibus-software,chef/omnibus-software,mattray/omnibus-software,aerobase/omnibus-software,aerobase/omnibus-software,chef/omnibus-software,higanworks/omnibus-software,mattray/omnibus-software,aerobase/omnibus-software,higanworks/omnibus-software,higanworks/omnibus-software,chef/omnibus-software,mattray/omnibus-software,mattray/omnibus-software,aerobase/omnibus-software