WifiNetworkFactory: Stop caching CMM instance

CMM instance creation / re-use should be controlled centrally by
ActiveModeWarden.  Caching CMM instance locally in WifiNetworkFactory (when a new
request comes in while procesing another request) can lead to the device
connecting to the same bssid via 2 CMM.

Bug: 148935691
Test: atest com.android.server.wifi
Change-Id: Ia12ec0c32685b50026b415cd195540c8ec402544
4 files changed
tree: e168b5bde824e7988620c780655f4e42f3922715
  1. apex/
  2. service/
  3. metrics_pdd_hook.py
  4. PREUPLOAD.cfg