Configuring object store for artifacts fails

ZD: https://gitlab.zendesk.com/agent/tickets/80678

If you add the lines, reconfigure fails:

gitlab_rails['artifacts_enabled'] = true
gitlab_rails['artifacts']['object_store_enabled'] = true

================================================================================
Recipe Compile Error in /opt/gitlab/embedded/cookbooks/cache/cookbooks/gitlab-ee/recipes/default.rb
================================================================================

NoMethodError
-------------
undefined method `[]=' for nil:NilClass

Cookbook Trace:
---------------
  /opt/gitlab/embedded/cookbooks/cache/cookbooks/gitlab/recipes/config.rb:21:in `from_file'
  /opt/gitlab/embedded/cookbooks/cache/cookbooks/gitlab/recipes/default.rb:26:in `from_file'
  /opt/gitlab/embedded/cookbooks/cache/cookbooks/gitlab-ee/recipes/default.rb:18:in `from_file'

Relevant File Content:
----------------------
/opt/gitlab/embedded/cookbooks/cache/cookbooks/gitlab/recipes/config.rb:

 14:  # See the License for the specific language governing permissions and
 15:  # limitations under the License.
 16:  #
 17:  
 18:  Gitlab[:node] = node
 19:  
 20:  if File.exists?('/etc/gitlab/gitlab.rb')
 21>>   Gitlab.from_file('/etc/gitlab/gitlab.rb')
 22:  end
 23:  
 24:  node.consume_attributes(Gitlab.generate_config(node['fqdn']))
 25:  
 26:  # If is EE package, load EE config
 27:  if defined?(GitlabEE) == 'constant'
 28:    node.consume_attributes(GitlabEE.generate_config)
 29:  end
 30:  

Platform:
---------
x86_64-linux

I also noticed a possible typo in https://docs.gitlab.com/ee/administration/job_artifacts.html#using-object-storage: should it be object_store_remote_directory instead of object_store_directory?