Clean up Supplicant start failure handling

Bug: 175425346
Test: atest SupplicantStaIfaceHalTest
Test: Start and stop Wi-Fi STA with Supplicant disabled
Change-Id: Ia2bdd5648bad876305a7a96624b8ed0c5607194a
3 files changed
tree: 0b9481c5a62487bc51b7ef3ca7e3c24d496038e8
  1. apex/
  2. service/
  3. metrics_pdd_hook.py
  4. PREUPLOAD.cfg