feat: add p2 deprecation for retrieving pytorch img uri

Author: Shibo Xing

src/sagemaker/image_uris.py

@@ -232,6 +232,7 @@ def retrieve(
 
     if repo == f"{framework}-inference-graviton":
         container_version = f"{container_version}-sagemaker"
+    _validate_instance_deprecation(framework, instance_type, version)
 
     tag = _get_image_tag(
         container_version,
@@ -364,6 +365,15 @@ def _config_for_framework_and_scope(framework, image_scope, accelerator_type=Non
     _validate_arg(image_scope, available_scopes, "image scope")
     return config if "scope" in config else config[image_scope]
 
+def _validate_instance_deprecation(framework, instance_type, version):
+    if framework == "pytorch" and \
+        _get_instance_type_family(instance_type) == "p2" and \
+            version >= "1.13":
+            raise ValueError(
+                "P2 instances have been deprecated for Sagemaker for PyTorch 1.13 and above. "
+                "For information about supported instance types please refer to "
+                "https://docs.aws.amazon.com/sagemaker/latest/dg/notebooks-available-instance-types.html"
+                )
 
 def _validate_for_suppported_frameworks_and_instance_type(framework, instace_type):
     """Validate if framework is supported for the instance_type"""