Revert openstack commands for the ops VO in keystone federation suppo…

…rt (#630)

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# Summary

Thanks @astalosj for spotting the mistake. It should be fixed now.

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<!-- Add, if any, the related issue here, e.g. #6 -->

**Related issue :**

Co-authored-by: Jan Astalos <73936420+astalosj@users.noreply.github.com>
Co-authored-by: Enol Fernandez <enol.fernandez@egi.eu>

content/en/providers/cloud-compute/openstack/aai.md

@@ -272,7 +272,7 @@ Create a group per VO that you want to support:
 
 ```shell
 # Support for https://operations-portal.egi.eu/vo/view/voname/ops
-$ openstack group create --domain egi.eu ops
+$ openstack group create ops
 
 # Support for https://operations-portal.egi.eu/vo/view/voname/cloud.egi.eu
 $ openstack group create --domain egi.eu egi-staff
@@ -281,7 +281,7 @@ $ openstack group create --domain egi.eu egi-staff
 Add groups to the desired local project:
 
 ```shell
-$ openstack role add --domain egi.eu --group ops --project ops member
+$ openstack role add --group ops --project ops member
 ```
 
 Add a domain-wide role for auditing purposes (see below):