[dvsim] Add passing count by milestone in reports
[dvsim] Add passing count by milestone in reports

This change adds passing count to the testplan progress table in the
generated report. The progress (%tage) is now computed as pass
percentage instead of written percentage. So if the test is written but
one or more seeds are failing, it will not be counted towards the
progress.

Signed-off-by: Srikrishna Iyer <2803d640feace36379942447842f26c7747b4dc3@google.com>

lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan