This adds a `--interval-jitter-percentage` flag to the controller to
add a +/- percentage jitter to the interval defined in resources
(defaults to 10%).
Effectively, this results in a reconcilation every 4.5 - 5.5 minutes
for a resource with an interval of 5 minutes.
Main reason to add this change is to mitigate spikes in memory and
CPU usage caused by many resources being configured with the same
interval.
Signed-off-by: Hidde Beydals <hidde@hhh.computer>
6f3eb22613