[prometheus-blackbox-exporter] make revisionHistoryLimit customizable

[CarstenSon]

Is your feature request related to a problem ?

i'm working in a cluster where resources are rare so i'm looking to decrease the footprint of my deployments. To enable this i'd like to reduce the number of Replicasets that's kept as there's a resource quota for that as well.

Describe the solution you'd like.

I'd like to be able to set the revisionHistoryLimit for the prometheus-blackbox exporter - as I use most exporters more like "up and running or ready to troubleshoot" and don't use helm rollbacks. So i'd like to reduce the replicaset overhead by setting the revisionHistoryLimit lower

Describe alternatives you've considered.

currently i'm working with helmfiles strategicMergePatches workaround to still set the revisionHistoryLimit lower than the default of 10..

Additional context.

No response