Pass CommonEventHeader to XNF simulator api

This change makes XNF simulator more configurable and
allows to validate more message parameters in robot integration tests

Closes ONAP-689

Change-Id: Ic0a10f1e1cdd84ac415c00050b4cca1ac496c56b
Signed-off-by: Jakub Dudycz <jakub.dudycz@nokia.com>
Issue-ID: DCAEGEN2-601
13 files changed