[Test] Fix test 'test_update_slurm' adapting the constraint in the sb…

…atch command to the flexible instance types used in the config.

Signed-off-by: Giacomo Marciani <[email protected]>

tests/integration-tests/tests/update/test_update.py

@@ -336,7 +336,7 @@ def test_update_slurm(region, pcluster_config_reader, s3_bucket_factory, cluster
 
     # Launch a new instance for queue1 and test updated pre/post install script execution and extra json update
     # Add a new dynamic node t3.small to queue1-i3
-    new_compute_node = _add_compute_nodes(slurm_commands, "queue1", "t3.small")
+    new_compute_node = _add_compute_nodes(slurm_commands, "queue1", "t3.small OR t3a.small OR t3.medium OR t3a.medium")
 
     logging.info(f"New compute node: {new_compute_node}")