Update Getting started to match change to heat-jeos
Update Getting started to match change to heat-jeos

heat-jeos list will no longer list jeos in the image name.  As a result,
we can't specify "-jeos" in the getting started guide.

Signed-off-by: Steven Dake <8638f3fce5db0278cfbc239bd581dfc00c29ec9d@redhat.com>

redhat-openstack/heat,steveb/heat,rickerc/heat_audit,dims/heat,Triv90/Heat,ntt-sic/heat,openstack/heat,takeshineshiro/heat,pshchelo/heat,rdo-management/heat,srznew/heat,citrix-openstack-build/heat,srznew/heat,Triv90/Heat,miguelgrinberg/heat,varunarya10/heat,openstack/heat,maestro-hybrid-cloud/heat,Triv90/Heat,rh-s/heat,JioCloud/heat,JioCloud/heat,citrix-openstack-build/heat,miguelgrinberg/heat,varunarya10/heat,steveb/heat,maestro-hybrid-cloud/heat,dims/heat,gonzolino/heat,cryptickp/heat,jasondunsmore/heat,pratikmallya/heat,NeCTAR-RC/heat,rickerc/heat_audit,pshchelo/heat,pratikmallya/heat,NeCTAR-RC/heat,dragorosson/heat,rh-s/heat,noironetworks/heat,cwolferh/heat-scratch,jasondunsmore/heat,redhat-openstack/heat,takeshineshiro/heat,cwolferh/heat-scratch,dragorosson/heat,ntt-sic/heat,rdo-management/heat,noironetworks/heat,gonzolino/heat,cryptickp/heat