commit 21cb4001dec43dc8a3e031eb4a64c721a03bd6ee
author Nathan Harold <nharold@google.com> Tue Jul 11 20:29:00 2017 -0700
committer Nathan Harold <nharold@google.com> Mon Jan 29 11:21:02 2018 -0800
tree cadbaa23cb0d0b379d8f7c86a6585cbc3e278aa2
parent df844ef577841e5e7903b867f1b5d0ffc95f91f3

Plumb NattKeepalive from HAL to DataConnection

Connect NetworkAgent's Packet Keepalive signals
to the telephony HAL via DataConnection and the
CommandsInterface.

Add DcKeepaliveTracker to DcNetworkAgent to track
incoming keepalive indications and handle status
reporting to the NetworkAgent

Bug: 38350389
Test: verified with sl4a, additional tests pending
Merged-In: If436b9240b192ed41f2dd0d05aca1ae36dc5e57f
Change-Id: If436b9240b192ed41f2dd0d05aca1ae36dc5e57f
(cherry picked from commit f9d8835c31c9a0347e5d40f6b0f582bbf09b9e51)