vstart_runner.py: use tuple instead of set

Using python3 leads to an error that says
"TypeError: unhashable type: 'Raw'".

Fixes: https://tracker.ceph.com/issues/45446
Signed-off-by: Rishabh Dave <ridave@redhat.com>
(cherry picked from commit cb0bfc8fab4372b0caf5102823883b0b913d4fcb)

diff --git a/qa/tasks/vstart_runner.py b/qa/tasks/vstart_runner.py
index c11ab353841059cb8161770fddea4a5f918c6974..73198195332f42e7b54cd2f9b7981bcc70348749 100644 (file)
--- a/qa/tasks/vstart_runner.py
+++ b/qa/tasks/vstart_runner.py
@@ -339,8 +339,8 @@ class LocalRemote(object):
         shell = any([a for a in args if isinstance(a, Raw)])
 
         # Filter out helper tools that don't exist in a vstart environment
-        args = [a for a in args if a not in {
-            'adjust-ulimits', 'ceph-coverage'}]
+        args = [a for a in args if a not in ('adjust-ulimits',
+                                             'ceph-coverage')]
 
         # Adjust binary path prefix if given a bare program name
         if "/" not in args[0]: