[leo_storage][mdc] Replication messages coudn't be consumed at all

[mocchira]

Since there is a possibility that the target object record to be replicated over the clusters doesn't be initialized method field, int this case,
case_clause could occur on a remote cluster and retried forever.

https://github.com/leo-project/leo_storage/blob/develop/src/leo_storage_handler_object.erl#L1013

Must do initialize the method field(put|delete) explicitly at caller.

[yosukehara]

I've included solution of this issue in leo-project/leo_storage@c64214e?diff=split.

[mocchira]

We still have this issue.