Check that annotation attribute values are concise when referencing something defined by an inner-type of the annotation

[wilkinsona]

When the value of an annotation's attribute references something defined by an inner type of the annotation, the inner type should be imported and referenced directly rather than through the containing type.

Consider the following:

@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)

The repetition of SpringBootTest in both the annotation itself and the value of one of its attributes is overly verbose. Instead, we prefer to import WebEnvironment and refer to it directly:

@SpringBootTest(webEnvironment = WebEnvironment.RANDOM_PORT)