Applied patches attached to tickets #3615 and #3617.
The former replaces the -v with the -d parameter in D2 unit tests. This enables the D2 tests that were skipped when the -v parameter was in use. The -v causes D2 to print version number and exits. The other patch is for printing configuration summary in D2 which we were not aware was failing because tests used to be skipped with -v parameter.