HDDS-7260. dfs -du should return correct disk space consumed by all replicas

[DaveTeng0]

What changes were proposed in this pull request?

Fix the issue that the "-du" command does not return correct disk consumed with replica for both ratis and EC

What is the link to the Apache JIRA

https://issues.apache.org/jira/browse/HDDS-7260

How was this patch tested?

Manual tests. (WIP) Unit tests. (WIP) Robot tests. (WIP)

[DaveTeng0]

Sure!! will resolve the conflict and update unit tests!

[DaveTeng0]

Sure!! will take a look the failed tests!

[umamaheswararao]

@jojochuang and @sodonnel, could you please check once if we can proceed with this? ( Pending CI)

[DaveTeng0]

sure! will create a separate ticket! Ensure dfs -du should return correct disk space consumed by all replicas for o3fs scheme: https://issues.apache.org/jira/browse/HDDS-7493