CDITCK-277 Extend test coverage for Specialization

MultipleSpecializedClassesTest is not good for cdi as the specialization of two "same" classes is not covered by specification.

UsingVetoToPreventInconsistentSpecializationTest is similar to test which is currently in CDI-TCK.
SpecializationTests fixed and copied to cdi-tck.
EarSpecializationTest not needed.