Fix dbapi connection instrument wrapper has no _sock member (open-telemetry#1424)

Fixes open-telemetry#1353

Also:

Fix the check for the connection already being instrumented in instrument_connection()
Add tests for commit() and rollback()
Add a couple missing docstring items.
Add basepython to docker-tests to fix running the tests on macOS.

Author: Dan Rogers

CHANGELOG.md

@@ -8,13 +8,18 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## Unreleased
 
 ### Added
-- `opentelemetry-instrumentation-botocore` add support for `messaging.*` in the sqs extension.
-  ([#1350](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/1350))
+
+- `opentelemetry-instrumentation-pymysql` Add tests for commit() and rollback().
+  ([#1424](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/1424))
 
 ### Fixed
 
 - Fix bug in Urllib instrumentation - add status code to span attributes only if the status code is not None. 
   ([#1430](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/1430))
+- `opentelemetry-instrumentation-pymysql` Fix dbapi connection instrument wrapper has no _sock member.
+  ([#1424](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/1424))
+- `opentelemetry-instrumentation-dbapi` Fix the check for the connection already being instrumented in instrument_connection().
+  ([#1424](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/1424))
 
 ## Version 1.14.0/0.35b0 (2022-11-03)