Re-enble pip -e in setup_develop
Re-enble pip -e in setup_develop

We had a bad merge somewhere along the way which reverted the pip -e
part of things. Replace it.

Change-Id: I620bea80eac7ad53b5bfb79dd2b21c29ad1b2267

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