Add Ruby 2.6 and remove Solaris 10 support for Ruby
Add Ruby 2.6 and remove Solaris 10 support for Ruby

Add the new Ruby
Remove support for Solaris 10 which we don't build for anymore.

Signed-off-by: Tim Smith <764ef62106582a09ed09dfa0b6bff7c05fd7d1e4@chef.io>

C-B4/omnibus-software,higanworks/omnibus-software,chef/omnibus-software,C-B4/omnibus-software,mattray/omnibus-software,C-B4/omnibus-software,higanworks/omnibus-software,C-B4/omnibus-software,higanworks/omnibus-software,mattray/omnibus-software,chef/omnibus-software,C-B4/omnibus-software,chef/omnibus-software,aerobase/omnibus-software,aerobase/omnibus-software,chef/omnibus-software,mattray/omnibus-software,aerobase/omnibus-software,chef/omnibus-software,chef/omnibus-software,mattray/omnibus-software,mattray/omnibus-software,aerobase/omnibus-software,higanworks/omnibus-software,aerobase/omnibus-software