don't force IPv4 in FETCHCOMMAND

Nowadays it's quite possible to have only IPv6 addresses on your build
host. Passing --ipv4 to curl prevents it from fetching anything in that
configuration.

BUG=b:238842597
TEST=build_packages --board=brya  # on a host with no IPv4 addresses

Change-Id: I2dfea20bcf7f742d22b4012da1b49f0610752312
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosutils/+/3760165
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Commit-Queue: Dan Callaghan <dcallagh@chromium.org>
Tested-by: Dan Callaghan <dcallagh@chromium.org>
1 file changed