[AWS] Opening ports should not fail if port is already open

[romilbhardwaj]

Approximate repro:

1. sky launch -c myclus --cloud --ports 8888
2. Use AWS console to terminate myclus VM and delete ~/.sky/state.db
3. Run sky launch -c myclus --cloud --ports 8888 again. Raises already exists error. If the port is already open, it should silently proceed.

Traceback (most recent call last):
  File "/path/to/project/utils/launch_api_server.py", line 28, in <module>
    sky.launch(
  File "/path/to/venv/lib/python3.11/site-packages/sky/utils/common_utils.py", line 386, in _record
    return f(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^
  File "/path/to/venv/lib/python3.11/site-packages/sky/utils/common_utils.py", line 386, in _record
    return f(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^
  File "/path/to/venv/lib/python3.11/site-packages/sky/utils/execution.py", line 455, in launch
    return _execute(
           ^^^^^^^^^
  File "/path/to/venv/lib/python3.11/site-packages/sky/utils/execution.py", line 281, in _execute
    handle = backend.provision(task, stream_logs)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/path/to/venv/lib/python3.11/site-packages/sky/utils/common_utils.py", line 386, in _record
    return f(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^
  File "/path/to/venv/lib/python3.11/site-packages/sky/backends/backend.py", line 60, in provision
    return self._provision(task, to_provision, stream_logs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/path/to/venv/lib/python3.11/site-packages/sky/backends/cloud_vm_ray_backend.py", line 2865, in _provision
    self._update_after_cluster_provisioned(
  File "/path/to/venv/lib/python3.11/site-packages/sky/backends/cloud_vm_ray_backend.py", line 3011, in _update_after_cluster_provisioned
    self._open_ports(handle)
  File "/path/to/venv/lib/python3.11/site-packages/sky/backends/cloud_vm_ray_backend.py", line 2949, in _open_ports
    return _open_ports(handle)
           ^^^^^^^^^^^^^^^^^^^
  File "/path/to/venv/lib/python3.11/site-packages/sky/provision/__init__.py", line 50, in wrapper
    return impl(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^
  File "/path/to/venv/lib/python3.11/site-packages/sky/provision/aws/instance.py", line 824, in open_ports
    authorize_ingress(IPPermissions=ip_permissions)
  File "/path/to/venv/lib/python3.11/site-packages/boto3/resources/action.py", line 581, in do_action
    response = action(self, *args, **kwargs)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/path/to/venv/lib/python3.11/site-packages/boto3/resources/factory.py", line 88, in __call__
    response = getattr(parent.meta.client, operation_name)(*args, **params)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/path/to/venv/lib/python3.11/site-packages/botocore/client.py", line 569, in _api_call
    return self._make_api_call(operation_name, kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/path/to/venv/lib/python3.11/site-packages/botocore/client.py", line 1023, in _make_api_call
    raise error_class(parsed_response, operation_name)
botocore.exceptions.ClientError: An error occurred (InvalidPermission.Duplicate) when calling the AuthorizeSecurityGroupIngress operation: the specified rule "peer: 0.0.0.0/0, TCP, port 45008, ALLOW" already exists