Peter Qiu b0bb4949f8 Osu2: add class for managing Wi-Fi network connection
Also setup a test app for unit tests, with few test
cases added for NetworkConnection.

Bug: 62388032
Test: start OSU app with Boigno OSU provider via adb,
      verify the OSU app is started and connected to
      the Boingo OSU AP.
Test: frameworks/base/packages/Osu2/tests/runtests.sh

Change-Id: Id60bc85871f3251d83d779d430e1dd1eff47d86e
2017-06-16 13:10:23 -07:00
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