CA-142429: The end time does not refresh when running pool audit trail report.
CA-142429: The end time does not refresh when running pool audit trail report.

For pool audit trail report, when click "Run Report",
reset "_endTime" so that the end time will be re-retrieved.

Signed-off-by: Hui Zhang <1290dea41121f0a9caa715ba0808e38da438ab06@citrix.com>

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