=pro #13928 Run multi-jvm tests in samples in normal test target

@bantonsson if I place the multiJvmSettings last the tests will run, but then it gets the wrong scalariform settings, so this is a workaround, but I'm rather lost in the settings jungle right now.
E.g. why do we need so advanced scalaraform settings in multiJvmSettings?
 `inConfig(MultiJvm)(SbtScalariform.configScalariformSettings)`
// cc @2m