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.

(cherry picked from commit a5356e9f33701fcffb87ec44b5636e5d6a9e1994)

Change-Id: I6a664065328b2307cc3df3f24c84b9acd99fc099
Reviewed-on: https://gerrit.chromium.org/gerrit/30070
Reviewed-by: Ben Chan <benchan@chromium.org>
Tested-by: Ben Chan <benchan@chromium.org>
1 file changed