Repair wifi coverage.sh

1. Update wifitests Android.bp for recent source file additions/deletions
2. Another version of FrameworksWifiTests.apk now shows up in the output;
   filter it out.

Bug: 160335531
Test: frameworks/opt/net/wifi/tests/wifitests/coverage.sh /tmp/cov
Change-Id: If008386347a98b43dcc71b63189d5fb735c9240f
2 files changed
tree: a1f5cf8ab94baa184653cd846d596dfe1469d51d
  1. apex/
  2. service/
  3. metrics_pdd_hook.py
  4. PREUPLOAD.cfg