clang-replace: Exclude test-time deps from LIT test suite

Subdirectories of test/clang-replace contain test-time dependencies and not
more LIT tests. Tell LIT to ignore these directories from the test suite.



git-svn-id: https://llvm.org/svn/llvm-project/clang-tools-extra/trunk@189019 91177308-0d34-0410-b5e6-96231b3b80d8