pmb.helpers.run_core: fix proxy env var logic
move proxy env related code from core() to flat_cmd() so that they are
added to the correct position at least for pmbootstrap chroot
.
Tested with pmbootstrap chroot
.
Fixes: 13c4ac42 ("pmb.helpers.run_core: fix proxy env var logic")
Closes: #2299 (closed)
Edited by Administrator