ART-21453: Fix OKD build for haproxy-router-haproxy32 by pinning to CentOS Stream 9 base

Without okd.from.stream: centos_stream9, the OKD build inherits a
CentOS Stream 10 base through openshift-enterprise-base-rhel9's OKD
override (okd.distgit.branch: rhaos-5.0-rhel-10). The haproxy32 RPM
from rhel-9-server-ose-rpms is an el9 package that requires libpcre.so.1
(PCRE1), which was removed in CentOS/RHEL 10.

Mirrors the fix applied to ose-haproxy-router-haproxy28 (openshift-eng#11759) and
the pattern used by ose-haproxy-router-base.

Co-authored-by: Cursor <cursoragent@cursor.com>

rh-pre-commit.version: 2.3.2
rh-pre-commit.check-secrets: ENABLED

Author: ashwindasr

images/ose-haproxy-router-haproxy32.yml

@@ -31,5 +31,7 @@ konflux:
 okd:
   distgit:
     branch: rhaos-5.0-rhel-9
+  from:
+    stream: centos_stream9
   enabled_repos:
   - rhel-9-server-ose-rpms