modemmanager-next/samsung: Pass qutoed username and password to %IPDPCFG.

BUG=chromium-os:32768
TEST=Verified in ModemManager log that the username and password are quoted when being passed to %IPDPCFG.

Change-Id: Ia182f75f7b5f07f33a9cb2825b760f7867f91ec1
Reviewed-on: https://gerrit.chromium.org/gerrit/29888
Reviewed-by: Gary Morain <gmorain@chromium.org>
Commit-Ready: Ben Chan <benchan@chromium.org>
Tested-by: Ben Chan <benchan@chromium.org>
1 file changed