Add ability to customize requests/limits for init and cleanup jobs.

[aidanestes]

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Is your feature request related to a problem? Please describe.

Many of the Kubernetes Jobs that are installed with Helm hooks (e.g., post-install, pre-delete, etc.) have hardcoded resource requests and limits. For instance:

• gateway-cleanup-job (pre-delete hook): https://github.com/hashicorp/consul-k8s/blob/v1.6.0/charts/consul/templates/gateway-cleanup-job.yaml#L49-L55
• gossip-encryption-autogenerate-job (pre-install, pre-upgrade hooks): https://github.com/hashicorp/consul-k8s/blob/v1.6.0/charts/consul/templates/gossip-encryption-autogenerate-job.yaml#L64-L70

Other jobs have the ability to customize these requests and limits:

• gateway-resources-job (post-install, post-upgrade hooks): https://github.com/hashicorp/consul-k8s/blob/v1.6.0/charts/consul/templates/gateway-resources-job.yaml#L92-L94

On some of my Kubernetes environments where I install this Consul Helm chart, I get OOMKilled events on the Jobs with hardcoded requests and limits, blocking operations like Helm deletes, Helm installs, and Helm upgrades.

I can workaround this issue by installing Kyverno on the cluster and using a ClusterPolicy to mutate the resource requests and limits for these Jobs upon admission to the cluster, but I should not have to depend on Kyverno mutating policies to configure Consul properly in my clusters.

Feature Description

I would request you expose values in your Helm chart to allow me to customize the resource requests and limits for Jobs installed by the Chart.

Use Case(s)

All cases. This is fundamental to the management of the chart with Helm.

Contributions

I can contribute with a PR if desired. This is a small, low-risk change.