server: make clat interface name public

modify clat interface name from private to public

Change-Id: Ib937c1dd7b4bc215fba57703fc2f4d694b336e6f
CRs-Fixed: 536223
(cherry picked from commit 43a76564f0a2771f4a09ba86edefec3fc66badbc)
(cherry picked from commit 0448fd4b63a179c953449c3e8b40345eec9727b1)
(cherry picked from commit cbde0fcd3fb6882f0572afb3200e122a4d30d909)
Merge "server: make clat interface name public" into kitkat3