MinioAdminClient.getServerInfo Missing field and data accuracy error

- Missing field
io.minio.admin.messages.info.DiskMetrics Missing [totalErrorsAvailability,totalErrorsTimeout]
see [madmin-go#info-commands](https://github.com/minio/madmin-go/blob/main/info-commands.go#L238)
- data accuracy error
Most servers have a high configuration,Int cannot be used for some fields, You are advised to change [Usage.size,GCStats.pauseTotal] to long