fix name of scheduler_driver in produced nova.conf
fix name of scheduler_driver in produced nova.conf

Fixes bug #1202174.  The nova.conf config variable that configures which
scheduler to use is scheduler_driver, not compute_scheduler_driver.

Change-Id: I775cae40edc9f8f55177f9d95cdbaa9416c4bfcd

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