group runner halts startup when signaled
group runner halts startup when signaled

Signed-off-by: Simon Leung <23f08a50fbaf82c4ecfae6738d41887b087c2e71@us.ibm.com>

cloudfoundry/gunk,glyn/gunk,cloudfoundry/gunk,hpcloud/gunk,hpcloud/gunk,glyn/gunk