Add a test case for attribute print.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@173765 91177308-0d34-0410-b5e6-96231b3b80d8
PR15017: A '>' can appear after a type-specifier in a template-argument-list.
It turns out that there's no correctness bug here (because we can't have a type
definition in this location), but there was a diagnostic bug.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@173766 91177308-0d34-0410-b5e6-96231b3b80d8