do not include erts in tar if include_erts is false
do not include erts in tar if include_erts is false

ethercrow/relx,umatomba/relx,erlware/relx,priestjim/relx,bsmr-erlang/relx,lrascao/relx,RJ/relx,timclassic/relx,tsloughter/relx,ingwinlu/relx,Licenser/relx,bitwalker/relx,zugolosian/relx,syl20bnr/relx