WifiConnectivityManager: Trigger automotive STA + STA

Also, ensure we trigger MBB with null bssid if the device supports
firmware roaming.

Bug: 169413079
Test: Manual steps:
i) adb shell cmd wifi add-network network1 wpa2 networkP (Primary)
ii) adb shell cmd wifi add-suggestion network2 open -p (Secondary OEM private)
iii) wpa_cli -i wlan0 - Ensure connected to network1
iii) wpa_cli -i wlan1 - Ensure connected to network2

Test: atest com.android.server.wifi
Change-Id: Iad5d8131cf5043b32118a302e76343327fa82db5
3 files changed
tree: ca6c6918b87f7cc725169c24684a4f003b8e7ad4
  1. apex/
  2. service/
  3. metrics_pdd_hook.py
  4. PREUPLOAD.cfg