Add pymssql instrumentation

[guillaumep]

trafficstars

Description

This pull request implements instrumentation for the pymssql library (https://pypi.org/project/pymssql/). It is basically a copy of the pymysql instrumentation.

Still a work-in-progress.

Type of change

• [x] New feature (non-breaking change which adds functionality)
• [x] This change requires a documentation update

How Has This Been Tested?

• [x] Ran tox tests
• [x] Tested manually in a python program - verified that traces are properly sent

Does This PR Require a Core Repo Change?

• [ ] Yes. - Link to PR:
• [x] No.

Checklist:

See contributing.md for styleguide, changelog guidelines, and more.

• [x] Followed the style guidelines of this project
• [x] Changelogs have been updated [PARTIAL] -> I can complete that once the PR is opened and I have an issue number
• [x] Unit tests have been added
• [x] Documentation has been updated