Catch key errors in config.json

So whole program doesn't stop if an incorrect health metric is specified

Bug: None
Test: tests/health_checker_test.py
Change-Id: I0b91f831ecdd7d8849617ed3ee371780532396f7
2 files changed
tree: 01a146398df1f94cfc08a8d16948821156f2c60f
  1. acts/
  2. tools/
  3. Android.mk
  4. PREUPLOAD.cfg