Allow setting of the number of minimum replicas and extraManifests

[wolviecb]

Hi,

Thanks for the great work setting this repo! :)

I've noticed that when setting the ScaleJob you hard coded the minReplicaCount number to 0. While I understand the rationale of setting it to 0 I also wanted it to be possible to set it to an arbitrary value.

I've also wanted to be able to not pass secrets as plain text on the chart, it would be helpful to be able to create the secret apart from the main helm chart (e. g.: using sealed secrets and passing on the encrypted manifest)

I've created a PR that adds these features :)

[clemlesne]

Version 6.2.0 deployed, that's for you! :)