Merge changes from topics "abort_network_request", "untrused_network",...

Merge changes from topics "abort_network_request", "untrused_network", "on_match_scan_results", "network_suggestions_impl"

* changes:
  WifiManager: Add abort callback for network request
  WifiNetworkAgentSpecifier: Allow satisfiedBy call for 2 instances
  WifiConfiguration: Add a field to mark network as trusted
  WifiManager: Send list of matching scan results for network request
  WifiManager: Implement network suggestion API
  wifi(API): Send directed broadcast post connection for suggestions