Add extra parameters for S3 registry: delete file, create bucket.

It would be nice to have options to be able to:
* Delete or not the temporary config file - so that it can be check/modified directly
* Create or not the bucket, as you might not have the right to do so

This commit allows both of those things, without changing the default
behavior of the playbook.

playbooks/adhoc/s3_registry/s3_registry.yml

@@ -15,6 +15,8 @@
     aws_secret_key: "{{ lookup('env', 'S3_SECRET_ACCESS_KEY') }}"
     aws_bucket_name: "{{ aws_bucket | default(clusterid ~ '-docker') }}"
     aws_bucket_region: "{{ aws_region | default(lookup('env', 'S3_REGION') | default('us-east-1', true)) }}"
+    aws_create_bucket: "{{ aws_create | default(True) }}"
+    aws_delete_after_run: "{{ aws_delete_temp | default(True) }}"
 
   tasks:
 
@@ -30,6 +32,7 @@
     command: oc scale --replicas=0 dc/docker-registry
 
   - name: Create S3 bucket
+    when: aws_create_bucket | bool
     local_action:
       module: s3 bucket="{{ aws_bucket_name }}" mode=create
 
@@ -71,3 +74,4 @@
 
   - name: Delete temporary config file
     file: path=/root/config.yml state=absent
+    when: aws_delete_after_run | bool