This is the cause of https://github.com/EnMasseProject/enmasse/issues/2825 - DashboardURL on ServiceInstances created 1.0 do not work in 1.1
Proposed fix for upstream won't be required, if we assue the users are on a version 0.27 or 0.28 https://github.com/EnMasseProject/enmasse/pull/2859
For downstream, users will have version 0.26 in configs. Having a look to see if removing the version number will fix the issue.