We are currently solving the following issue within our repository. Here is the issue text:
--- BEGIN ISSUE ---
aws ec2 replace-network-acl-entry --protocol ?
How can I specify a protocol? When I specify --protocol tcp or --protocol udp, the command fails:

A client error (InvalidParameterValue) occurred when calling the ReplaceNetworkAclEntry operation: Invalid value 'tcp' for IP protocol. Unknown protocol.

A client error (InvalidParameterValue) occurred when calling the ReplaceNetworkAclEntry operation: Invalid value 'udp' for IP protocol. Unknown protocol.

The command create-network-acl-entry accepts --protocol tcp or --protocol udp.


--- END ISSUE ---

Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
--- BEGIN FILES ---
Path: `awscli/customizations/ec2protocolarg.py`
Content:
```
1 # Copyright 2013 Amazon.com, Inc. or its affiliates. All Rights Reserved.
2 #
3 # Licensed under the Apache License, Version 2.0 (the "License"). You
4 # may not use this file except in compliance with the License. A copy of
5 # the License is located at
6 #
7 #     http://aws.amazon.com/apache2.0/
8 #
9 # or in the "license" file accompanying this file. This file is
10 # distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF
11 # ANY KIND, either express or implied. See the License for the specific
12 # language governing permissions and limitations under the License.
13 """
14 This customization allows the user to specify the values "tcp", "udp",
15 or "icmp" as values for the --protocol parameter.  The actual Protocol
16 parameter of the operation accepts only integer protocol numbers.
17 """
18 
19 def _fix_args(operation, endpoint, params, **kwargs):
20     if 'protocol' in params:
21         if params['protocol'] == 'tcp':
22             params['protocol'] = '6'
23         elif params['protocol'] == 'udp':
24             params['protocol'] = '17'
25         elif params['protocol'] == 'icmp':
26             params['protocol'] = '1'
27         elif params['protocol'] == 'all':
28             params['protocol'] = '-1'
29 
30 
31 def register_protocol_args(cli):
32     ('before-parameter-build.ec2.RunInstances', _fix_args),
33     cli.register('before-parameter-build.ec2.CreateNetworkAclEntry',
34                  _fix_args)
35     
36
```
--- END FILES ---

Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.

Here is an example:

```diff
diff --git a/examples/server_async.py b/examples/server_async.py
--- a/examples/server_async.py
+++ b/examples/server_async.py
@@ -313,4 +313,4 @@
 
 
 if __name__ == "__main__":
-    asyncio.run(run_async_server("."), debug=True)
+    asyncio.run(run_async_server(), debug=True)
diff --git a/examples/server_sync.py b/examples/server_sync.py
--- a/examples/server_sync.py
+++ b/examples/server_sync.py
@@ -313,5 +313,5 @@
 
 
 if __name__ == "__main__":
-    server = run_sync_server(".")
+    server = run_sync_server()
     server.shutdown()

```

diff --git a/awscli/customizations/ec2protocolarg.py b/awscli/customizations/ec2protocolarg.py
--- a/awscli/customizations/ec2protocolarg.py
+++ b/awscli/customizations/ec2protocolarg.py
@@ -29,7 +29,8 @@
 
 
 def register_protocol_args(cli):
-    ('before-parameter-build.ec2.RunInstances', _fix_args),
     cli.register('before-parameter-build.ec2.CreateNetworkAclEntry',
                  _fix_args)
+    cli.register('before-parameter-build.ec2.ReplaceNetworkAclEntry',
+                 _fix_args)

{"golden_diff": "diff --git a/awscli/customizations/ec2protocolarg.py b/awscli/customizations/ec2protocolarg.py\n--- a/awscli/customizations/ec2protocolarg.py\n+++ b/awscli/customizations/ec2protocolarg.py\n@@ -29,7 +29,8 @@\n \n \n def register_protocol_args(cli):\n-    ('before-parameter-build.ec2.RunInstances', _fix_args),\n     cli.register('before-parameter-build.ec2.CreateNetworkAclEntry',\n                  _fix_args)\n+    cli.register('before-parameter-build.ec2.ReplaceNetworkAclEntry',\n+                 _fix_args)\n", "issue": "aws ec2 replace-network-acl-entry --protocol ?\nHow can I specify a protocol? When I specify --protocol tcp or --protocol udp, the command fails:\n\nA client error (InvalidParameterValue) occurred when calling the ReplaceNetworkAclEntry operation: Invalid value 'tcp' for IP protocol. Unknown protocol.\n\nA client error (InvalidParameterValue) occurred when calling the ReplaceNetworkAclEntry operation: Invalid value 'udp' for IP protocol. Unknown protocol.\n\nThe command create-network-acl-entry accepts --protocol tcp or --protocol udp.\n\n", "before_files": [{"content": "# Copyright 2013 Amazon.com, Inc. or its affiliates. All Rights Reserved.\n#\n# Licensed under the Apache License, Version 2.0 (the \"License\"). You\n# may not use this file except in compliance with the License. A copy of\n# the License is located at\n#\n#     http://aws.amazon.com/apache2.0/\n#\n# or in the \"license\" file accompanying this file. This file is\n# distributed on an \"AS IS\" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF\n# ANY KIND, either express or implied. See the License for the specific\n# language governing permissions and limitations under the License.\n\"\"\"\nThis customization allows the user to specify the values \"tcp\", \"udp\",\nor \"icmp\" as values for the --protocol parameter.  The actual Protocol\nparameter of the operation accepts only integer protocol numbers.\n\"\"\"\n\ndef _fix_args(operation, endpoint, params, **kwargs):\n    if 'protocol' in params:\n        if params['protocol'] == 'tcp':\n            params['protocol'] = '6'\n        elif params['protocol'] == 'udp':\n            params['protocol'] = '17'\n        elif params['protocol'] == 'icmp':\n            params['protocol'] = '1'\n        elif params['protocol'] == 'all':\n            params['protocol'] = '-1'\n\n\ndef register_protocol_args(cli):\n    ('before-parameter-build.ec2.RunInstances', _fix_args),\n    cli.register('before-parameter-build.ec2.CreateNetworkAclEntry',\n                 _fix_args)\n    \n", "path": "awscli/customizations/ec2protocolarg.py"}], "after_files": [{"content": "# Copyright 2013 Amazon.com, Inc. or its affiliates. All Rights Reserved.\n#\n# Licensed under the Apache License, Version 2.0 (the \"License\"). You\n# may not use this file except in compliance with the License. A copy of\n# the License is located at\n#\n#     http://aws.amazon.com/apache2.0/\n#\n# or in the \"license\" file accompanying this file. This file is\n# distributed on an \"AS IS\" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF\n# ANY KIND, either express or implied. See the License for the specific\n# language governing permissions and limitations under the License.\n\"\"\"\nThis customization allows the user to specify the values \"tcp\", \"udp\",\nor \"icmp\" as values for the --protocol parameter.  The actual Protocol\nparameter of the operation accepts only integer protocol numbers.\n\"\"\"\n\ndef _fix_args(operation, endpoint, params, **kwargs):\n    if 'protocol' in params:\n        if params['protocol'] == 'tcp':\n            params['protocol'] = '6'\n        elif params['protocol'] == 'udp':\n            params['protocol'] = '17'\n        elif params['protocol'] == 'icmp':\n            params['protocol'] = '1'\n        elif params['protocol'] == 'all':\n            params['protocol'] = '-1'\n\n\ndef register_protocol_args(cli):\n    cli.register('before-parameter-build.ec2.CreateNetworkAclEntry',\n                 _fix_args)\n    cli.register('before-parameter-build.ec2.ReplaceNetworkAclEntry',\n                 _fix_args)\n    \n", "path": "awscli/customizations/ec2protocolarg.py"}]}