qa/suites: Make fixed-4 an option for verify tests

Fixes: https://tracker.ceph.com/issues/67489
Signed-off-by: Brad Hubbard <bhubbard@redhat.com>
(cherry picked from commit a3d0c624232f7f9d2fcb9f1b35b5d2569a4b7809)

diff --git a/qa/suites/rados/verify/clusters/fixed-4.yaml b/qa/suites/rados/verify/clusters/fixed-4.yaml
new file mode 120000 (symlink)
index 0000000..aa88300
--- /dev/null
+++ b/qa/suites/rados/verify/clusters/fixed-4.yaml
@@ -0,0 +1 @@
+.qa/clusters/fixed-4.yaml
\ No newline at end of file