A1 mun

[charanan]

Fixes #

• [ ] Add documentation.
• [x] Add tests.
• [ ] Add a changelog entry.
• [ ] Add your name in the contributors file.
• [ ] If you changed the HTTP API, update the API_VERSION constant and add an API changelog entry in the docs
• [ ] If you added a new configuration setting, update the kinto.tpl file with it.

Summary of Changes Added instrumentation to watch_execution_time function Added instrumentation to load_from_config function Added test cases for watch_execution_time function Added test cases for load_from_config function