examples/ubuntu/prerequisites: add APT_GET_OPTS and remove -y

Bug: 23884877
Change-Id: Iaf1c0c47eb95ec4703fe68408d32d7078309c856
Reviewed-on: https://weave-review.googlesource.com/1140
Reviewed-by: Vitaly Buka <vitalybuka@google.com>
1 file changed
tree: 65a9241293da72f044533efa3a0718bfcf8ee966
  1. libweave/