message: [tests] use `--no-check-certificates` when invoking `wget`
diff: @@ -42,7 +42,7 @@ set -x
  prepare_dbus()
  {
  DBUS_SOURCE=dbus-1.4.26
  - wget -nv "https://dbus.freedesktop.org/releases/dbus/${DBUS_SOURCE}.tar.gz"
  + wget --tries 4 --no-check-certificate --quiet "https://dbus.freedesktop.org/releases/dbus/${DBUS_SOURCE}.tar.gz"
  tar xvf "${DBUS_SOURCE}.tar.gz"
  (cd "${DBUS_SOURCE}" && ./configure --prefix= --exec-prefix=/usr \
  && sed -i '/HAVE_BACKTRACE/d' config.h \
  @@ -162,7 +162,7 @@ prepare_libmdnssd()
  [[ ${OTBR_MDNS} == mDNSResponder ]] || return 0
  - wget -nv "https://opensource.apple.com/tarballs/mDNSResponder/${MDNSRESPONDER_SOURCE}.tar.gz"
  + wget --tries 4 --no-check-certificate --quiet "https://opensource.apple.com/tarballs/mDNSResponder/${MDNSRESPONDER_SOURCE}.tar.gz"
  tar xvf "${MDNSRESPONDER_SOURCE}.tar.gz"
  cat >"${MDNSRESPONDER_SOURCE}/Android.mk" <<EOF
  LOCAL_PATH:= \$(call my-dir)
  