Split test for clearer ApfV4/V6 generator failure reporting

Splited the testCountAndPassDropCompareR0 test into separate
testV4CountAndPassDropCompareR0 and testV6CountAndPassDropCompareR0
tests to provide more specific error messages when either the
ApfV4Generator or ApfV6Generator encounters a failure.

Test: TH
Change-Id: I3de91429aba8a1f50781873aab19734e01794f6f
1 file changed