Update cleanup logic
Update cleanup logic

Update the cleanup task to remove all instances and databases.
We are no longer sharing a project for Spanner developement.

dazuma/google-cloud-ruby,googleapis/google-cloud-ruby,quartzmo/google-cloud-ruby,hxiong388/google-cloud-ruby,hxiong388/google-cloud-ruby,googleapis/google-cloud-ruby,dazuma/google-cloud-ruby,qingling128/google-cloud-ruby,googleapis/google-cloud-ruby,dazuma/google-cloud-ruby,qingling128/google-cloud-ruby,landrito/google-cloud-ruby,quartzmo/google-cloud-ruby,qingling128/google-cloud-ruby,googleapis/google-cloud-ruby,hxiong388/google-cloud-ruby,quartzmo/gcloud-ruby,qingling128/google-cloud-ruby,quartzmo/google-cloud-ruby,landrito/google-cloud-ruby,dazuma/google-cloud-ruby,dazuma/google-cloud-ruby,googleapis/google-cloud-ruby,landrito/google-cloud-ruby,landrito/google-cloud-ruby,CloudVLab/google-cloud-ruby,googleapis/google-cloud-ruby,hxiong388/google-cloud-ruby,CloudVLab/google-cloud-ruby,CloudVLab/google-cloud-ruby,quartzmo/google-cloud-ruby,landrito/google-cloud-ruby,CloudVLab/google-cloud-ruby,blowmage/gcloud-ruby,quartzmo/google-cloud-ruby,CloudVLab/google-cloud-ruby,dazuma/google-cloud-ruby,quartzmo/google-cloud-ruby