update message expiration time to 6 min for KDDI

KDDI has requested to change duplication detection
time from 10 minutes to 6 minutes in
v1.2.0 of KDDI LTE Device requirement.

Bug: 156691684
Test: Build
Change-Id: I4c3de139d2160f909956c4ae6f2d6e8c974b3e1a
Merged-in: I4c3de139d2160f909956c4ae6f2d6e8c974b3e1a
1 file changed