Create deposit client account for Dagstuhl staging instance

Setup Dagstuhl account in the deposit staging instance

changed due date to May 31, 2023

changed milestone to %Integrate deposit with FAIRCORE4EOSC partners on staging instance

added activity::Processing label

added activity::Support label and removed activity::Processing label

superseded by swh/infra/sysadm-environment#5285 (closed)

closed