Remove the ban of using p4d as head node

Signed-off-by: Hanwen <hanwenli@amazon.com>

Author: hanwen-cluster

CHANGELOG.md

@@ -21,6 +21,7 @@ CHANGELOG
 - Use inclusive language in user facing messages and internal naming convention.
 - Change the default of instance types from the hardcoded `t2.micro` to the free tier instance type 
   (`t2.micro` or `t3.micro` dependent on region). In regions without free tier, the default is `t3.micro`.
+- Allow P4d as head node. (P4d was already supported as compute node in 2.10.0)
 
 
 **BUG FIXES**

cli/src/pcluster/config/validators.py

@@ -77,7 +77,7 @@
     "sc1": (500, 16 * 1024),
 }
 
-HEAD_NODE_UNSUPPORTED_INSTANCE_TYPES = ["p4d.24xlarge"]
+HEAD_NODE_UNSUPPORTED_INSTANCE_TYPES = []
 HEAD_NODE_UNSUPPORTED_MESSAGE = "The instance type '{0}' is not supported as head node."
 
 # Constants for section labels

cli/tests/pcluster/config/test_validators.py

@@ -87,9 +87,7 @@ def test_ec2_instance_type_validator(mocker, instance_type, expected_message):
     utils.assert_param_validator(mocker, config_parser_dict, expected_message)
 
 
-@pytest.mark.parametrize(
-    "instance_type, expected_message", [("t2.micro", None), ("c4.xlarge", None), ("p4d.24xlarge", "is not supported")]
-)
+@pytest.mark.parametrize("instance_type, expected_message", [("t2.micro", None), ("c4.xlarge", None)])
 def test_head_node_instance_type_validator(mocker, instance_type, expected_message):
     config_parser_dict = {"cluster default": {"master_instance_type": instance_type}}
     utils.assert_param_validator(mocker, config_parser_dict, expected_message)

cli/tests/pcluster/configure/test_pcluster_configure.py

@@ -914,12 +914,3 @@ def test_hit_config_file(mocker, capsys, test_datadir):
     # Expected sys exit with error
     with pytest.raises(SystemExit, match="ERROR: Configuration in file .* cannot be overwritten"):
         _run_configuration(mocker, old_config_file, with_config=True)
-
-
-def test_invalid_p4d_head_node_type(mocker):
-    with pytest.raises(StopIteration):
-        assert_that(general_wrapper_for_prompt_testing(mocker, head_node_instance="p4d.24xlarge")).is_true()
-
-
-def test_valid_p4d_compute_node_type(mocker):
-    assert_that(general_wrapper_for_prompt_testing(mocker, compute_instance="p4d.24xlarge")).is_true()

tests/integration-tests/tests/multiple_nics/test_multiple_nics/test_multiple_nics/pcluster.config.ini

@@ -8,7 +8,7 @@ cluster_template = default
 base_os = {{ os }}
 key_name = {{ key_name }}
 scheduler = {{ scheduler }}
-master_instance_type = c5.xlarge
+master_instance_type = {{ instance }}
 compute_instance_type = {{ instance }}
 initial_queue_size = 1
 maintain_initial_size = true