Added org.scalatest.matchers.must to osgi and -m settings.
Added org.scalatest.matchers.must to osgi and -m settings.

cheeseng/scalatest,scalatest/scalatest,cheeseng/scalatest,scalatest/scalatest,scalatest/scalatest,dotty-staging/scalatest,dotty-staging/scalatest,dotty-staging/scalatest,cheeseng/scalatest