openSAFETY, EPL: Fix heuristic for false-positives

openSAFETY, EPL: Fix heuristic for false-positives

 - Adding a typedefinition which can be deactivated, so
   that certain types of frames are only detected in their
   respective transport protocols
 - Rename bytes array as it is a key-word for some IDEs and
   hinders syntax checking
 - Add node info to the time request from/by fields
 - EPL: add message type to heuristic dissection call

Change-Id: Ia572bb68fc1d24d70e72b77867f0dad323b055b9
Reviewed-on: https://code.wireshark.org/review/750
Reviewed-by: Roland Knall <rknall@gmail.com>
Reviewed-by: Anders Broman <a.broman58@gmail.com>