qa/suites/rados: include rook test in rados

This just to make sure we don't break mgr/orchestrator.

Note that we already symlink ../orch/cephadm, so this makes rados
include all of orch/.

Signed-off-by: Sage Weil <sage@newdream.net>
(cherry picked from commit 5db5c8c292e70a643d91f19e1b21da3be65ecb34)

diff --git a/qa/suites/rados/rook b/qa/suites/rados/rook
new file mode 120000 (symlink)
index 0000000..1249cc9
--- /dev/null
+++ b/qa/suites/rados/rook
@@ -0,0 +1 @@
+../orch/rook
\ No newline at end of file