add support for heredoc folding of lines
add support for heredoc folding of lines

this change in the parser allows for us to have heredocs folded
into logical lines.

Change-Id: I51ebe6cd7b89b5f7194e947896f20b6750e972e3

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