adjustments in docs and j2 template

inventory/byo/hosts.origin.example

@@ -352,7 +352,8 @@ openshift_master_identity_providers=[{'name': 'htpasswd_auth', 'login': 'true',
 #openshift_hosted_registry_acceptschema2=true
 #openshift_hosted_registry_enforcequota=true
 #
-# Any S3 service (Minio, ExoScale, ...)
+# Any S3 service (Minio, ExoScale, ...): Basically the same as above
+# but with regionendpoint configured
 # S3 bucket must already exist.
 #openshift_hosted_registry_storage_kind=object
 #openshift_hosted_registry_storage_provider=s3

inventory/byo/hosts.ose.example

@@ -351,6 +351,22 @@ openshift_master_identity_providers=[{'name': 'htpasswd_auth', 'login': 'true',
 #openshift_hosted_registry_pullthrough=true
 #openshift_hosted_registry_acceptschema2=true
 #openshift_hosted_registry_enforcequota=true
+#
+# Any S3 service (Minio, ExoScale, ...): Basically the same as above
+# but with regionendpoint configured
+# S3 bucket must already exist.
+#openshift_hosted_registry_storage_kind=object
+#openshift_hosted_registry_storage_provider=s3
+#openshift_hosted_registry_storage_s3_accesskey=access_key_id
+#openshift_hosted_registry_storage_s3_secretkey=secret_access_key
+#openshift_hosted_registry_storage_s3_regionendpoint=https;//myendpoint.example.com
+#openshift_hosted_registry_storage_s3_bucket=bucket_name
+#openshift_hosted_registry_storage_s3_region=bucket_region
+#openshift_hosted_registry_storage_s3_chunksize=26214400
+#openshift_hosted_registry_storage_s3_rootdirectory=/registry
+#openshift_hosted_registry_pullthrough=true
+#openshift_hosted_registry_acceptschema2=true
+#openshift_hosted_registry_enforcequota=true
 
 # Metrics deployment
 # See: https://docs.openshift.com/enterprise/latest/install_config/cluster_metrics.html

roles/openshift_hosted/templates/registry_config.j2

@@ -13,8 +13,8 @@ storage:
     accesskey: {{ openshift.hosted.registry.storage.s3.accesskey }}
     secretkey: {{ openshift.hosted.registry.storage.s3.secretkey }}
     region: {{ openshift.hosted.registry.storage.s3.region }}
-{%   if openshift.hosted.registry.storage.s3.regionendpoint %}
-    regionendpoint: {{ aws_bucket_region_endpoint }}
+{%   if 'regionendpoint' in openshift.hosted.registry.storage.s3 %}
+    regionendpoint: {{ openshift.hosted.registry.storage.s3.regionendpoint }}
 {%   endif -%}
     bucket: {{ openshift.hosted.registry.storage.s3.bucket }}
     encrypt: false