Revert "Do not include partest and it's dependencies in generated pom."

This reverts commit 053193f83a2e84996ac33e692322ea5b0b3e1321.

I misunderstood bevaior of test scope/configuration in relation to
transitive dependency. Partest can be included in generated pom as
long as it's declared to be in test scope. Therefore the changes
in 053193f83a2e84996ac33e692322ea5b0b3e1321 are not needed.