Cover SSLPermission with tests.

Android does not support SecurityManager, so we just check that
implementation is a stub.

Newly added test is JUnit3 as "atest package.name" does not pick
up JUnit4 tests from libcore.javax.net.ssl. That's probably due to
test_config.

Fixes: 182163688
Test: atest libcore.javax.net.ssl.SSLPermissionTest
Change-Id: I96043ac48dc5ab9936a6b753d24499a0dee54b9c
1 file changed