Improve the `multi_source.connects_tried` feature test:
* Replace the main course from
*checking `Connect_Tried` after sleeping a specific time* to
*checking the duration after reaching a minimum `Connect_Tried`*
* Not using a specific SLEEP eliminates the possibility (of failure)
that it awakens before the `Connects_Tried` counter increments.
* In replacement-based tests of conventional views (SHOW & variants),
assert the parallel values without distinguishing which is which
* There were rare cases where both values end up equal (even though
one was configured to tick more frequently than the other).
* Comment touchups
Reviewed-by: Kristian Nielsen <knielsen@knielsen-hq.org>
18115d392f