Move examples to tests.
Move examples to tests.

The bazelci stops if the build fails, so make the example's build
also a "test" just so it can't prevent the tests from running. Hopefully
if an example fails, a test will pinpoint what rule is busted first.

Also fix the test_flags to parse correctly.

bazelbuild/rules_apple,bazelbuild/rules_apple,bazelbuild/rules_apple,bazelbuild/rules_apple