Add DPP failure code ENROLLEE_FAILED_TO_SCAN_NETWORK_CHANNEL

This error is generated when framework finds that
Network's operating channel(by looking into scan cache)
is not included in the list of channels Enrollee scanned in
attempting to discover the network prior to connection.

Bug: 149445843
Test: atest com.android.server.wifi.DppManagerTest
Test: Manual, DPP connection success/failure tests.
Change-Id: Ia8ff76bf6c4aa2e39f12c22e0a477fc09a9683db
10 files changed