Bluetooth: Support  HFP Client role on Bluedroid.

Implementation changes to support HFP Client role
on Bluedroid stack

Change-Id: Ie37e95d3b0e3f785af818fb495c835e420792f4d
(cherry picked from commit 072fad9a9a17c2a31660e7ac6cd6eba82d63fe50)
(cherry picked from commit 559508238c2fe1f8f10049549b8a29053399407c)
server: add enhanced routing support

Add support for policy and metric based routing APIs to
NetworkManagementService. This functionality is used for WQE, IMS, and
Android QoS features.

Change-Id: I5e50185c9ac1cf72c9366815c2ecf590842edfca
frameworks/base: IPV6 tethering support

This patch adds two new API calls addUpstreamV6Interface and
removeUpstreamV6Interface to the tethering framework to pass the IPv6
upstream and downstream interfaces to netd if IPv6 is available.
Required to enable ICMPv6 forwarding.

Change-Id: I1f4f6284b2f152d8b4f0fbd02ac5a17f57c71dd7
base: IPV6 tethering support

Added two APIs addUpstreamV6Interface and removeUpstreamV6Interface,
required to pass the interfaces to use to the Router Advertisement
Proxy.
Added a dun entry to the networkAttributes value in
res/values/config.xml.
This is to allow tethering to work with the dunRequired property.
Added dun to allowable tether upstream type.
Enabled debug flags for debug logging inside framework components.
Regardless of MOBILE_TYPE_DUN APN being available, if dun_required
flag is not set, fall back to HIPRI as a preferred APN for the
embedded data call.
Debug logging was enabled by default which was causing security
vulnerabilities. This patch disables debug logging.

CRs-fixed: 555006
Change-Id: Idb0971449473554bcd749d478563db7ba351d55d
Acked-by: Subash Abhinov Kasiviswanathan <subashab@qti.qualcomm.com>
(cherry picked from commit 43bac130e4bab1c12792d29042f85c6a10372553)
(cherry picked from commit be8491aa9d82177c200eab1af713244a7bbbdcfc)
Bluetooth: Add Get/Set socket option to the Bluetooth Socket

Introduced Get/Set socket option to the Bluetooth Socket.
For these APIs it will directly call the APIs of Adapter
Service.The corresponding APIs have been implemented in
the Adapter service of native Bluetooth APK.

CRs-Fixed: 557180
Change-Id: Ic49b66599fb3c4c500e52295895d708dbc172cc7
(cherry picked from commit 80a5a8d9f465458c5417e532cc98970951f2c675)
(cherry picked from commit 5b4c228467074d2b71e02cd36c220584dba818fe)