tests: Some tests depend upon jars in `-dependson` projects
tests: Some tests depend upon jars in `-dependson` projects

So we configure gradle to make sure those project's `jar` tasks are
up-to-date before starting the `test` task.

Fixes https://github.com/bndtools/bnd/issues/3500

Signed-off-by: BJ Hargrave <3d26bb3930946e3370762d769a073cece444c2d8@bjhargrave.com>

psoreide/bnd,psoreide/bnd,psoreide/bnd