Enable velero install in HA CI (azimuth-cloud#109)

* Enable velero install in HA CI

Author: sd109

.github/environments/arcus-ha/inventory/group_vars/all/variables.yml

@@ -24,3 +24,14 @@ capi_cluster_worker_count: 3
 # Use a single replica for Consul
 # The risk of failed upgrades is too great, and it is going away soon
 consul_server_replicas: 1
+
+# Enable Velero just to check that installation works
+velero_enabled: true
+velero_s3_url: https://required-but-not-used.com
+velero_bucket_name: not-used
+velero_backup_schedule_enabled: true
+velero_backup_schedule_name: default
+velero_backup_schedule_timings: "0 0 * * *"
+velero_backup_schedule_ttl: "168h"
+velero_aws_access_key_id: required-but-not-used
+velero_aws_secret_access_key : required-but-not-used