objstorage_testsing: Fix some RPC tests after recent changes in swh-core
Remote exception handling has changed since rDCORE08289ce5c33e507ec3ce80cade86f688b4107f3f
Migrated from D2684 (view on Phabricator)
Remote exception handling has changed since rDCORE08289ce5c33e507ec3ce80cade86f688b4107f3f
Migrated from D2684 (view on Phabricator)