altair-lte: update PCO to handle latest VZW deployment

Update PCO handling code such that it conforms to the latest VZW network
behavior. This includes updating the way we mark a SIM as provisioned.
In the old network, only provisioned SIMs can attach to the network.
Now, unprovisioned SIMs can attach and connect to the network.

BUG=chromium:379837
TEST=Insert new SIM, verify unprovisioned, activate SIM, verify
provisioned, exhaust data, verify out-of-data

(cherry picked from commit 0b975f226627b4a3197a46734c11c8d83fbff884)

Conflicts:
	plugins/altair/mm-modem-helpers-altair-lte.c

Change-Id: Ie454f6fb6d8764161f167e93a4235bb93fbde59a
Reviewed-on: https://chromium-review.googlesource.com/203472
Reviewed-by: Prathmesh Prabhu <pprabhu@chromium.org>
Tested-by: Thieu Le <thieule@chromium.org>
5 files changed