CYNGNOS-454 - Fix config_preferred_apn Overrides

With the influx of new APNs and reordering, this broke the vendor/cm
overlay for preferred APN overrides.

Reorder the list to unbreak functionality.

TODO: Make this override more granular as to distinguish between Carrier
and MVNO on carrier APN.

Change-Id: I65b1bf3a54ce76e4cf0b817a1a3cd6f86fe31f6d
(cherry picked from commit 5a6bda25)