update to omnibus-software 67307717f6

This release contains SmartOS support.
[CHEF-2576] adjust post inst/rm scripts for SmartOS

SmartOS writes data to `/opt/local` so we should link data to
`/opt/local/bin` instead of `/usr/bin`.
[CHEF-2576] add SmartOS build lab
Merge branch 'CHEF-2576'