WCM: Listen to all single scan results

In addition to single scan results initiated by WCM itself, it
listens to the single scans requested by other modules as well.
This gives us more opportunities to connect to a network.

We don't check if a single scan is scheduled by WCM watchdog
any more since we now listen to all single scan results.

Bug: 29606099
Tests: Wifi Framework Unit Test & manual tests
Change-Id: I2a1df0337005878f415eccc425600267434c2e54
2 files changed
tree: 325a09eac50fdc1afa11e774b828368edd8e356f
  1. service/
  2. tests/