openmldb_tool: pip install slow when install paramiko

https://github.com/4paradigm/OpenMLDB/blob/60debe319164d61a925660d6c9d5d25ad5f0ad11/python/openmldb_tool/setup.py#L34

`pip is looking at multiple versions of paramiko to determine which version is compatible with other requirements. This could take a while.`

So we should better to give a version of paramiko?

Look at the setup.py file in python/openmldb_tool/ to see the paramiko dependency. Check if a specific version is already pinned; if not, research compatible versions of paramiko with the project's other dependencies. Test the pip install after updating the version constraint to ensure it resolves quickly.

Written by the indexing model from the issue text.