DAOS-16897 object: add N+3 EC object class

[wangshilong]

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[github-actions]

Ticket title is 'Add new N+3 EC object class'
Status is 'Open'
Labels: 'LRZ'
https://daosio.atlassian.net/browse/DAOS-16897

[liuxuezhao]

cannot add it here to avoid break compatibility, as cannot change the original value of previously defined redun.
so need to select a place that will not change original defined value.

[daosbuild1]

Test stage Functional Hardware Large completed with status FAILURE. https://build.hpdd.intel.com//job/daos-stack/job/daos/view/change-requests/job/PR-15649/1/execution/node/1506/log