system: Fix upgrade_SUITE to ignore flags passed in ERL_AFLAGS
system: Fix upgrade_SUITE to ignore flags passed in ERL_AFLAGS

g-andrade/otp,mikpe/otp,dgud/otp,emacsmirror/erlang,erlang/otp,dumbbell/otp,potatosalad/otp,g-andrade/otp,jj1bdx/otp,jj1bdx/otp,erlang/otp,bjorng/otp,jj1bdx/otp,bjorng/otp,g-andrade/otp,g-andrade/otp,dumbbell/otp,potatosalad/otp,g-andrade/otp,dumbbell/otp,potatosalad/otp,jj1bdx/otp,dumbbell/otp,isvilen/otp,bjorng/otp,bjorng/otp,erlang/otp,dumbbell/otp,jj1bdx/otp,rlipscombe/otp,vinoski/otp,jj1bdx/otp,dgud/otp,potatosalad/otp,rlipscombe/otp,mikpe/otp,dumbbell/otp,potatosalad/otp,dumbbell/otp,isvilen/otp,isvilen/otp,mikpe/otp,dumbbell/otp,isvilen/otp,vinoski/otp,isvilen/otp,vinoski/otp,rlipscombe/otp,bjorng/otp,mikpe/otp,g-andrade/otp,g-andrade/otp,dgud/otp,erlang/otp,vinoski/otp,rlipscombe/otp,emacsmirror/erlang,potatosalad/otp,dgud/otp,rlipscombe/otp,potatosalad/otp,g-andrade/otp,erlang/otp,vinoski/otp,jj1bdx/otp,erlang/otp,potatosalad/otp,jj1bdx/otp,mikpe/otp,bjorng/otp,mikpe/otp,erlang/otp,mikpe/otp,dgud/otp,erlang/otp,dgud/otp,dumbbell/otp,dgud/otp,bjorng/otp,erlang/otp,vinoski/otp,rlipscombe/otp,mikpe/otp,emacsmirror/erlang,vinoski/otp,bjorng/otp,vinoski/otp,jj1bdx/otp,bjorng/otp,dgud/otp,isvilen/otp,g-andrade/otp,mikpe/otp,emacsmirror/erlang,emacsmirror/erlang,emacsmirror/erlang,dgud/otp,emacsmirror/erlang,rlipscombe/otp,isvilen/otp,mikpe/otp,jj1bdx/otp,dumbbell/otp,g-andrade/otp,isvilen/otp,potatosalad/otp,rlipscombe/otp,emacsmirror/erlang,rlipscombe/otp,isvilen/otp,vinoski/otp,rlipscombe/otp,isvilen/otp,dgud/otp,erlang/otp,emacsmirror/erlang,potatosalad/otp,emacsmirror/erlang,vinoski/otp,bjorng/otp