Add sleeps to ixfr system test [v9_18]
ensure that at least a second has passed since a zone was last loaded to prevent it accidentally being skipped as up to date.
(cherry picked from commit 491a8cfe)
Closes #3577 (closed)
Edited by Mark Andrews
ensure that at least a second has passed since a zone was last loaded to prevent it accidentally being skipped as up to date.
(cherry picked from commit 491a8cfe)
Closes #3577 (closed)