
This patch adds a new field for the `get pools` command to show what replication capability the backend array currently has. This is based on the status of current array connections in the backend array. Response will be `async`, `sync`. `sync` or `trisync`. `trisync` implies support for `sync` and `async`. `sync` implies support for `async`. Change-Id: I46cbb986ed73335270d6dd4ad197197648b55506
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