Add missing KOLLA_CONFIG_STRATEGY for the aodh_api_cron container

... because kolla_start fails to start with the following error if
that environment parameter is not defined.

ERROR:__main__:InvalidConfig: KOLLA_CONFIG_STRATEGY is not set properly

Change-Id: I7cdf127b495c4d9f415a703fc8b7954a3f5b53fe

deployment/aodh/aodh-api-container-puppet.yaml

@@ -308,6 +308,8 @@ outputs:
                   - /var/lib/config-data/puppet-generated/aodh:/var/lib/kolla/config_files/src:ro
                   - /var/log/containers/aodh:/var/log/aodh
                   - /var/log/containers/httpd/aodh-api:/var/log/httpd
+            environment:
+              KOLLA_CONFIG_STRATEGY: COPY_ALWAYS
       host_prep_tasks:
       - name: create persistent logs directory
         file: