[loki-distributed] Add resource requests and limits to tokengen job template

[wessp01]

The job-tokengen.yaml template within the Helm chart currently does not include resource limits and requests for both initContainers and regular containers.

By adding resource configuration to the chart, we ensure that users can specify limits and requests for CPU and memory, preventing such errors and allowing users to manage resource quotas more effectively.

What has been changed:

• Added resource limits and requests configuration to initContainers and containers.
• The resource values are read from the chart’s values.yaml.

Why is this useful:

• Resolves errors related to missing resource limits in Kubernetes resource quotas.
• Provides flexibility to users to define the resource needs of their jobs.
• Aligns with best practices for managing resources in Kubernetes.

[CLAassistant]

All committers have signed the CLA.