Filter out system headers on macOS.
Fixes
RELNOTES:
Bazel now no longer includes system headers on macOS in coverage reports
Closes
@@ -235,6 +235,7 @@ LCOV_MERGER_CMD="${LCOV_MERGER} --coverage_dir=${COVERAGE_DIR} \
--filter_sources=/usr/bin/.+ \
--filter_sources=/usr/lib/.+ \
--filter_sources=/usr/include.+ \
+ --filter_sources=/Applications/.+ \
--filter_sources=.*external/.+ \
--source_file_manifest=${COVERAGE_MANIFEST}"
