Skip child process kills in stack.sh exit trap
Skip child process kills in stack.sh exit trap

Logs are still being cut off in certain circumstances, almost certainly
because the awk process handling the output for verbose logging to a file
dies/is killed early.

Don't kill child processes in the EXIT trap function in this specific case.

Change-Id: I89600b61d59f87e93ff959710d0169e49d2c9845

neerja28/Devstack_GlusterFS,tianweizhang/devstack,pacinete/devstack,andrewrothstein/devstack,bswartz/devstack,dirkmueller/devstack,ozamiatin/devstack,vishnugonela/devstack,sc68cal/devstack,innodee/openstackk,HPCHub/devstack,samgoon/devstack,group-policy/devstack,j4/devstack,parul24/devstack,JioCloud/devstack,LoHChina/devstack,BSJAIN92/OpenStack,pczerkas/devstack,rushiagr/devstack,vsham20/devstack,Mahito/devstack,varunarya10/devstack,atulpatil301/devstack,thomasem/devstack,bigswitch/devstack,rushiagr/devstack,kplus/devstack-moonshot,group-policy/devstack,flavio-fernandes/devstack,olivierlemasle/devstack,wenhuizhang/devstack,CloudServer/devstack,ozamiatin/devstack,eshnil2000/devstack,bq-xiao/devstack,vsham20/devstack,TwinkleChawla/devstack,costingalan/devstack,sc68cal/devstack,olivierlemasle/devstack,mssumanth/devstack,sequenceiq/devstack,neerja28/Devstack_GlusterFS,TwinkleChawla/devstack,Mahito/devstack,richliu/devstack,herrsechs/devstack,mmasaki/devstack,kplus/devstack-moonshot,NaokiMiyata/devstack,andrewrothstein/devstack,pombredanne/devstack,affo/devstack,promptworks/devstack,williamthegrey/devstack,virtualopensystems/devstack,eharney/devstack,dtroyer/devstack,tianweizhang/devstack,liuquansheng47/devstack,affo/devstack,eharney/devstack,mc2014/devstack,CloudServer/devstack,mc2014/devstack,dtroyer/devstack,pombredanne/devstack,liuquansheng47/devstack,nuxeh/devstack,prithivm/branch01,noironetworks/devstack,promptworks/devstack,bljgaurav/openstack-test,bswartz/devstack,srics/devstack,avvocatodemarchis/devstack,nuxeh/devstack,BSJAIN92/OpenStack,vishnugonela/devstack,upadhyay-prashant/devstack,pacinete/devstack,herrsechs/devstack,NaokiMiyata/devstack,openstack-dev/devstack,openstack-dev/devstack,dirkmueller/devstack,Juniper/devstack,j4/devstack,thomasem/devstack,atulpatil301/devstack,samgoon/devstack,avvocatodemarchis/devstack,mmasaki/devstack,nawawi/openstack,varunarya10/devstack,sequenceiq/devstack,HPCHub/devstack,LoHChina/devstack,mssumanth/devstack,parul24/devstack,bljgaurav/openstack-test,nawawi/openstack,jamielennox/devstack,bq-xiao/devstack,pczerkas/devstack,wenhuizhang/devstack,prithivm/branch01,bigswitch/devstack,noironetworks/devstack,richliu/devstack,upadhyay-prashant/devstack,costingalan/devstack,flavio-fernandes/devstack