[Testing] Fix suppression of SchedulerValidator when using scheduler plugin.

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

Author: gmarciani

tests/integration-tests/clusters_factory.py

@@ -88,7 +88,7 @@ def update(self, config_file, raise_on_error=True, log_error=True, **kwargs):
                 command.extend([f"--{kebab_case(k)}", str(val)])
         # TODO Remove the validator suppression below once the plugin scheduler is officially supported
         if self.config["Scheduling"]["Scheduler"] == "plugin":
-            command.append("--suppress-validators type:SchedulerValidator")
+            command.extend(["--suppress-validators", "type:SchedulerValidator"])
         result = run_pcluster_command(command, raise_on_error=raise_on_error, log_error=log_error)
         logging.info("update-cluster response: %s", result.stdout)
         response = json.loads(result.stdout)
@@ -438,7 +438,7 @@ def create_cluster(self, cluster, log_error=True, raise_on_error=True, **kwargs)
                 command.extend([f"--{kebab_case(k)}", str(val)])
         # TODO Remove the validator suppression below once the plugin scheduler is officially supported
         if cluster.config["Scheduling"]["Scheduler"] == "plugin":
-            command.append("--suppress-validators type:SchedulerValidator")
+            command.extend(["--suppress-validators", "type:SchedulerValidator"])
         try:
             result = run_pcluster_command(command, timeout=7200, raise_on_error=raise_on_error, log_error=log_error)