Add error checking and help to tool
Add error checking and help to tool

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

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