Use github.com instead of opendev.org

This is to avoid failures due to opendev.org downtime.

Change-Id: Idbf131715b29e3d72748432f922bcb818cd48072
(cherry picked from commit 931ae1c)

Author: priteau

requirements.yml

@@ -1,6 +1,6 @@
 ---
 collections:
-  - name: https://opendev.org/openstack/ansible-collection-kolla
+  - name: https://github.com/openstack/ansible-collection-kolla
     type: git
     version: unmaintained/2024.1
   - name: dellemc.os10