Set up default include directories on module target

Summary

This MR applies the NEW dune policy DP_DEFAULT_INCLUDE_DIRS that sets include-directories on the Dune::LocalFunctions targets instead of a global property. All targets with this implicit assumption need to be modified to link against Dune::LocalFunctions now. For tests this can be easily accomplished by linking all targets created in a directory to that library using link_libraries command inside that directory.