Update docker-rally image to v1.5.0

Supports adding a CA cert to system trust store.

https://github.com/stackhpc/docker-rally/releases/tag/v1.5.0

Author: markgoddard

ansible/kayobe-automation-run-tempest.yml

@@ -5,7 +5,7 @@
   vars:
     results_path_local: "{{ lookup('env', 'PWD') }}"
     rally_image: 'stackhpc/docker-rally'
-    rally_tag: v1.4-dev
+    rally_tag: v1.5.0
     rally_image_full: "{{ rally_docker_registry }}/{{ rally_image }}:{{ rally_tag }}"
     rally_no_sensitive_log: true
     # This ensures you get the latest image if the image is updated