Shorten the action needed message shown on resizing of the compute fleet (#6144)

Co-authored-by: Himani Deshpande <himanidp@amazon.com>

Author: himani2411

cli/src/pcluster/config/update_policy.py

@@ -122,10 +122,8 @@ def actions_needed_queue_update_strategy(change, _):
 
 def actions_needed_resize_update_strategy_on_remove(*_):
     return (
-        "Stop the compute fleet with the pcluster update-compute-fleet command, "
-        "or set QueueUpdateStrategy to TERMINATE in the configuration used for the 'update-cluster' operation. "
-        "Be aware that this update will remove nodes from the scheduler and terminates the EC2 instances "
-        "associated. Jobs running on the removed nodes will terminate"
+        "Stop the compute fleet or set QueueUpdateStrategy:TERMINATE in config "
+        "to remove nodes from the scheduler, terminate the associated instances & any running jobs"
     )
 
 

cli/tests/pcluster/config/test_update_policy.py

@@ -485,10 +485,8 @@ def test_condition_checker_resize_update_strategy_on_remove(
         "All compute nodes must be stopped or QueueUpdateStrategy must be set to TERMINATE"
     )
     assert_that(UpdatePolicy.RESIZE_UPDATE_STRATEGY_ON_REMOVE.action_needed(change_mock, patch_mock)).is_equal_to(
-        "Stop the compute fleet with the pcluster update-compute-fleet command, or set QueueUpdateStrategy to "
-        "TERMINATE in the configuration used for the 'update-cluster' operation. Be aware that this update will remove "
-        "nodes from the scheduler and terminates the EC2 instances associated. Jobs running on the removed nodes will "
-        "terminate"
+        "Stop the compute fleet or set QueueUpdateStrategy:TERMINATE in config "
+        "to remove nodes from the scheduler, terminate the associated instances & any running jobs"
     )
     cluster_has_running_capacity_mock.assert_called()
 

tests/integration-tests/tests/custom_resource/test_cluster_custom_resource.py

@@ -173,7 +173,7 @@ def test_cluster_update_invalid(
     for cluster_config_path, error in [
         # CloudFormation truncates error messages,
         # so we cannot specify the full error message here, but only a part of it.
-        ("pcluster.config.reducemaxcount.yaml", "Jobs running on the removed nodes will terminate"),
+        ("pcluster.config.reducemaxcount.yaml", "Stop the compute fleet or set QueueUpdateStrategy:TERMINATE"),
         ("pcluster.config.negativemaxcount.yaml", "Must be greater than or equal to 1."),
         ("pcluster.config.wrongscripturi.yaml", "s3 url 's3://invalid' is invalid."),
     ]: