Rename deployment policy to runtime policy

[BrendanSchell]

Description

Renames deployment policy to runtime policy.

Closes https://github.com/OpenMined/Heartbeat/issues/1554.

Affected Dependencies

List any dependencies that are required for this change.

How has this been tested?

Tested by running through enclave notebooks after rename.

Checklist

• [ ] I have followed the Contribution Guidelines and Code of Conduct
• [ ] I have commented my code following the OpenMined Styleguide
• [ ] I have labeled this PR with the relevant Type labels
• [ ] My changes are covered by tests

[review-notebook-app[bot]]

Check out this pull request on 

See visual diffs & provide feedback on Jupyter Notebooks.

---

Powered by ReviewNB