server: start cne service

Connectivity Engine (CnE) provides advanced network selection per socket,
reduced signalling traffic, and increased power savings.
The service implements the interface defined by CNEManager which Android
applications may use.

Change-Id: I9ffd1f5d60f5e9e185ab482a35b3b07f29a4124c
(cherry picked from commit 3a4e3ba1bc67c460ec3c2fd4ef169ae25e3e69b1)
(cherry picked from commit 1bb0036652318ac8bbecf3e6c810bbc779387c61)
(cherry picked from commit 3c8af4a2546d9b71d113072d680107cb56651e71)
(cherry picked from commit 861a4b062196020bf24a5b3731c717b5b95a7d77)
(cherry picked from commit e3dba9799892f13c5bc2376b81cf5dceae17492c)

Add Connectivity Engine (CnE) WQE support

Enhanced connectivity features viz. Wifi Quality Estimation.
Supports dual network mode - wifi & mobile simultaneously.
Use QcConnectivityService when CnE is enabled for all CnE features.

Change-Id: I14b02e21515bfc1b5fd2fc4f28e5190fa80f83f8

server: Initialize ConnectivityService on low memory device

Skip initialization of QcConnectivityService and
use ConnectivityService.java for a low memory device

CRs-Fixed: 531430

Change-Id: I2111ec32f6e40ca79b7fc91ec4cef97ac27f3b3a

Update CNE feature values.

Start QcConnectivityServices for the new
application traffic profiling feature too.

Change-Id: I52ae76420ebd098d43fe0663f41ce622a407b90e

connectivity: allow inheritance to subclass

set modifier to protected in order to allow
subclass to use the same data and avoid redefinition.

Change-Id: I2dc688d3e433775cb073ec6faae3981807212cc9

Change visibility of methods

Change the visibility of some methods so that
they are accessible to the child class.

Change-Id: Ie1a45978b42742cac0aaedba29fb2375882c0ae4
CRs-Fixed: 611347

Conflicts:

	services/java/com/android/server/SystemServer.java