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* Add paramter to loadstatus API to compute underdeplication against cluster view This change adds a query parameter `computeUsingClusterView` to loadstatus apis that if specified have the coordinator compute undereplication for segments based on the number of services available within cluster that the segment can be replicated on, instead of the configured replication count configured in load rule. A default load rule is created in all clusters that specified that all segments should be replicated 2 times. As replicas are forced to be on separate nodes in the cluster, this causes the loadstatus api to report that there are under-replicated segments when there is only 1 data server in the cluster. In this case, calling loadstatus api without this new query parameter will always result in a response indicating under-replication of segments * * fix exception mapper * * Address review comments * * update external API docs * Apply suggestions from code review Co-authored-by: Charles Smith <38529548+techdocsmith@users.noreply.github.com> * * update more external docs * * update javadoc * Apply suggestions from code review Co-authored-by: Charles Smith <38529548+techdocsmith@users.noreply.github.com> Co-authored-by: Charles Smith <38529548+techdocsmith@users.noreply.github.com>