qa: qa/suites/rados/upgrade/parallel points to reef

```
$ git rm qa/suites/rados/upgrade/parallel
$ ln -s ../../upgrade/reef-x/parallel qa/suites/rados/upgrade/parallel
$ git add qa/suites/rados/upgrade/parallel
```

Signed-off-by: Radoslaw Zarzynski <rzarzyns@redhat.com>

diff --git a/qa/suites/rados/upgrade/parallel b/qa/suites/rados/upgrade/parallel
index 84b63d6a5d88e55277ab59d68926786ccd980c9d..4a89d75d594a3fe71ae8e263b641401bcde21652 120000 (symlink)
--- a/qa/suites/rados/upgrade/parallel
+++ b/qa/suites/rados/upgrade/parallel
@@ -1 +1 @@
-../../upgrade/quincy-x/parallel/
\ No newline at end of file
+../../upgrade/reef-x/parallel
\ No newline at end of file