09383bc657
The combined Ironic service was passing the no_fork parameter
to ServiceLauncher, which was wrongly mapped to ProcessLauncher [1]
Switch to ProcessLauncher which properly supports no_fork since
oslo.service 4.2.0. This ensures VNC signal handling works correctly
and matches the pattern used by other Ironic services.
[1] 0dfdf810ac
Change-Id: Iea150a5c3f147b7e4f8a778510bfc061a14f289a
Signed-off-by: Riccardo Pittau <elfosardo@gmail.com>