Do not let unprivileged processes shut down the vm
Do not let unprivileged processes shut down the vm

This patch ignores the exit status of unprivileged processes and
always continue the execution.

pythia-project/pythia,pythia-project/pythia-core,pythia-project/pythia-core,pythia-project/pythia,pythia-project/pythia-core,pythia-project/pythia,pythia-project/pythia,pythia-project/pythia,pythia-project/pythia-core,pythia-project/pythia-core,pythia-project/pythia-core,pythia-project/pythia