[migration/3.18] Add add_permission relation definitions earlier
Otherwise sync_schema_props_perms('defaultval') does not work because the
later relation is not in schema.
Latest changes
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* table of `all latest changes`_
Links below is providing useful RQL query example.
.. _all latest changes: view?rql=Any+M%2CX+WHERE+X+modification_date+M+ORDERBY+M+DESC+LIMIT+30