TS: Tests grouping 2: Create categories & let devs categorize the tests.

Based on AS7-2086 and SUREFIRE-803, we can now create the categories for tests.
They would be in testsuite/shared.

Example:

interface AllTests;
interface ATests extends AllTests;
interface BTests extends AllTests;
interface AaTests extends ATests;

@Category(ATests.class)	public void ATest();
@Category(AaTests.class) public void AaTest();
@Category(BTests.class) public void BTest();

It should be possible to have multiple categories:

@Categories({Foo.class, Bar.class})

TODO: Check if it also works with FailSafe.

Some categories candidates (feel free to extend):

• ASTest
  • EJB
  • JPA
  • Management
  • Security
    • CommonCriteria
  • NonArquillian
  • Transactions
  • Multinode
    • Clustering