apns: add APN for AIS 3G

AIS 3G 2100 MHz uses a new MNC

Change-Id: If624a7bf465af30ec3160258186054cb9f424108
Merge "apns: add APN for AIS 3G" into cm-11.0
Merge pull request #6 from CyanogenMod/cm-11.0

Cm 11.0