title: Spring Boot component scan include only specific package
body: <p>I have two <code>Spring Boot</code> Projects lets call them <code>Foo</code> and <code>Bar</code>. <code>Bar</code> is included in <code>Foo</code> as a dependency. Now I want to include only a specific Package from <code>Bar</code> in the <code>Component Scan</code> of <code>Foo</code> (let's say: <code>com.example.bar.ctrl</code>). I know that you can exclude packages via <code>excludeFilters</code> but that would be much more effort and I'd need to maintain the <code>exclude filter-list</code> everytime I create a new package in <code>Bar</code>.
  What is the best way to archive that behavior?</p>