compare_cts_reports: allow abi selection while parsing reports

If the `--abi` flag is specified while parsing or aggregating
cts reports, the unselected test items would be skipped.

Bug: 315073470
Test: ./test_parse_cts_report.py
Change-Id: I524df983b77c449d4908a7da0cae65b3dd4244ae
7 files changed