test out innerproduct pairwise_distances changes

Test out the changes in rapidsai/raft#1226, to make
sure they don't break cuml

cpp/cmake/thirdparty/get_raft.cmake

@@ -92,8 +92,8 @@ endfunction()
 # To use a different RAFT locally, set the CMake variable
 # CPM_raft_SOURCE=/path/to/local/raft
 find_and_configure_raft(VERSION          ${CUML_MIN_VERSION_raft}
-                        FORK             rapidsai
-			PINNED_TAG       branch-${CUML_BRANCH_VERSION_raft}
+                        FORK             benfred
+                        PINNED_TAG       pairwise_inner_product
                         EXCLUDE_FROM_ALL ${CUML_EXCLUDE_RAFT_FROM_ALL}
                         # When PINNED_TAG above doesn't match cuml,
                         # force local raft clone in build directory