Limit of the length of string in description when the model is registered.

Register with a long description:
```python
from azureml.core.model import Model

model = Model.register(model_path="sklearn_regression_model.pkl",
model_name="sklearn_regression_model",
tags={'area': "diabetes", 'type': "regression"},
description="""Limit of the length of string in description when the model is registered
Limit of the length of string in description when the model is registered.
Limit of the length of string in description when the model is registered.""",
workspace=ws)
```

**Return**
```python
ERROR - Received bad response from Model Management Service:
Response Code: 400

...
```

It works if you have a shorter description like
```python
description="""Limit of the length of string in description when the model is registered
Limit of the length of string in description when the model is registered."""
```