WifiWake lock previously seen networks

Add networks observed in the past 10 minutes to the lock when WifiWake
starts, since we may not get enough scan data after wifi is toggled off
to construct the lock properly.

Bug: 183961030
Test: atest com.android.server.wifi
Change-Id: Ie05f1e8ff88a286c2c4d11dfea0599a0c5a3345b
4 files changed