Add support for regular expression matching and sanitizing of headers in Flask. (open-telemetry#1413)

Co-authored-by: Srikanth Chekuri <[email protected]>

Author: 2 people

Diff for: CHANGELOG.md

@@ -27,6 +27,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   ([#1323](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/1323))
 - `opentelemetry-instrumentation-wsgi` Add support for regular expression matching and sanitization of HTTP headers.
   ([#1402](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/1402))
+- `opentelemetry-instrumentation-flask` Add support for regular expression matching and sanitization of HTTP headers.
+  ([#1413](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/1413))
 - `opentelemetry-instrumentation-pyramid` Add support for regular expression matching and sanitization of HTTP headers.
   ([#1414](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/1414))