apns: add otelo web APN

CYAN-2440 on Jira

Change-Id: I266c8759716fc1883a73c4e66c7cb13d80153ac0
(cherry picked from commit 8484afd9bcf466d0eea850dccfcb2a970aa47491)
vendor/cm: fix Sprint MMS apn being set as default

Sprint CDMA MMS APN was being incorrectly set as default and hipri,
causing LTE connectivity issues because it was prioritized over the
other APN entries for LTE and EHRPD.

Change-Id: I6ca4fd172e2ecc64ca7a2c3fbca5327be61e7b5c
(cherry picked from commit 9f21c2640823cccc2c1a50efc1592073e60302cd)
Add Korea KT LTE apns

Change-Id: I294b55ccff8b83b1464b71ca5f52210702d8ffb9
(cherry picked from commit b784429d041c1ebbd440d2dd2bccf478d4ef44bb)