feat(asm/pylons): add HTTP query support to pylons framework (#4019)

## Description
Add HTTP query to set_http_meta in Pylons framework

## Checklist
- [x] Title must conform to [conventional commit](https://github.com/conventional-changelog/commitlint/tree/master/%40commitlint/config-conventional).
- [x] Add additional sections for `feat` and `fix` pull requests.
- [x] Ensure tests are passing for affected code.

## Reviewer Checklist
- [ ] Title is accurate.
- [ ] Description motivates each change.
- [ ] No unnecessary changes were introduced in this PR.
- [ ] PR cannot be broken up into smaller PRs.
- [ ] Avoid breaking [API](https://ddtrace.readthedocs.io/en/stable/versioning.html#interfaces) changes unless absolutely necessary.
- [ ] Tests provided or description of manual testing performed is included in the code or PR.
- [ ] Release note has been added for fixes and features, or else `changelog/no-changelog` label added.
- [ ] All relevant GitHub issues are correctly linked.
- [ ] Backports are identified and tagged with Mergifyio.
- [ ] Add to milestone.

Author: avara1986

ddtrace/contrib/pylons/middleware.py

@@ -145,6 +145,7 @@ def _start_response(status, *args, **kwargs):
                     url=url,
                     raw_uri=raw_uri,
                     query=query_string,
+                    parsed_query=dict(request.GET),
                     request_path_params=self._parse_path_params(path_params),
                 )
                 if controller:

releasenotes/notes/asm-pylons-detect-attacks-on-HTTP-query-9f68009da8051bc0.yaml

@@ -0,0 +1,4 @@
+---
+features:
+  - |
+    ASM: Detect attacks on Pylons HTTP query.