Gradle: ability to declare resources filtering in a generic way

[Aurélien Mino]

Needed to support gradle in the spring-boot-local-profile module.

With maven, this is indirectly declared by declaring and configuring the maven-resources-plugin.
But with gradle it can't be done by declaring a plugin.
Maybe for gradle we should support declaring a free configuration block. Not perfect, if multiple modules need to declare resources filtering, but it might be enough in the first instance

[Renan Franca]

I was thinking about that, too. I agree with you, I think implementing a needle to resource filtering is too much now.