Consider adding DataJdbcTest

Someone [asked on stackoverflow](http://stackoverflow.com/questions/38746788/what-is-the-equivalent-of-datajpatest-if-i-just-want-to-test-jdbctemplate-code) how to create their own test annotations. 

Looking around I could see at least that we could share the exclude filter. Maybe we could also include the jdbc template support itself? I am not sure if that's a common pattern.
