pbrx upload: remove protected flag
This job is designed to be modified by other projects.  Its security
currently depends on the allowed-projects setting.  Remove the
protected flag which doesn't make sense in that case.
description: |
Publish images built by pbrx to openstackzuul Docker Hub account.
A value must be supplied for the pbrx_prefix variable.
- protected: true
allowed-projects:
- openstack-infra/nodepool
- openstack-infra/zuul
