[autotools] Fix wildcard for sub-directory cmake/module.

Once more, the complete path must be part of the wildcard.
(reviewed by natalies, like last commit)


git-svn-id: svn://svn.iws.uni-stuttgart.de/DUMUX/dumux/trunk@13410 2fb0f335-1f38-0410-981e-8018bf24f1b0