K8S - Adding request / limit on resources

[gaubej]

For now, resources on k8s doesn't have CPU / RAM requests and limits.

This can be tricky on a cluster without default request / limit for K8S to manage resources placement and optimization.

So, based on current pod consumption, I'm trying to add this request / limit on resources. I need feedback on the amounts, and we need to be sure that applications are using these (Java must have container support activated).

Also, I didn't work on CronJobs for now, but if you have estimation on consumption, that would be perfect.

#113