Make JUnit classes more compatible with standard JUnit

Adds the missing methods to junit.framework.Test and implements
them in junit.framework.TestCase and junit.framework.TestSuite.

Also, adds String value() default "" to org.junit.Ignore to
allow tests to specify a reason why tests are being ignored.

These have no impact on Vogar as the current code doesn't use
those methods. However, it will be necessary to extend those
classes in order to test current Vogar behavior before
switching to JUnit and having those methods in before will make
the switch simpler.

Bug: 27940141
Change-Id: I706efd4d61e78744ecf62f638f843e3b4cada4a1
4 files changed