IRadio 1.6: Public Key Type For IMSI Encryption

 - Add public key type for IMSI encryption.
 - Add VTS test case for setCarrierInfoForImsiEncryption_1_6

Test: Manual
Bug: 142333634
Merged-In: Id11055354b32e492e24f43b348bdf2745d63529c
Change-Id: Id11055354b32e492e24f43b348bdf2745d63529c
(cherry picked from commit 10ca7b1d5bc1820b402c49003b9fe6f8d88505dd)
3 files changed