Use Settings.Global instead of Settings.Secure in a few places.

There are more but the PDP_WATCHDOG_POLL_INTERVAL_MS is causing
excessive logging so changing it and others in the DCT as well as
in GsmSST.

The uses in PhoneFactory, SmsUsageMonitor, PhoneBase,
CdmaLteServiceStateTracker, CdmaSubscriptionSourceManager and
CdmaServiceStateTracker need to be looked at also, will fix
those next.

Change-Id: I8c29e7ce5ad6aecc824d3c0d71fa6cfca0eac777