feat: Fix src attribute for pod name

[douavue]

Relevant information

• Updated otel source pod name attribute for infra pod definition

Checklist

• I've read the guidelines and understand the acceptance criteria.
• The value of the attribute marked as identifier will be unique and valid.
• I've confirmed that my entity type wasn't already defined. If it is I'm providing an explanation above.

[entityBot]

beep boop bop.

I have found some errors processing these changes:

* Error VALIDATING domainType: 'INFRA-KUBERNETES_POD' on synthesis - Exception: No entity matches 'INFRA-KUBERNETES_POD' synthesis rules for the given test data: 'k8s-ksm-via-opentelemetry-prometheus-receiver.json file - #1' data point. Please review test data and synthesis rules.

* Error VALIDATING domainType: 'INFRA-KUBERNETES_POD' on synthesis - Exception: No entity matches 'INFRA-KUBERNETES_POD' synthesis rules for the given test data: 'k8s-ksm-via-opentelemetry-prometheus-receiver.json file - #2' data point. Please review test data and synthesis rules.

[entityBot]

beep boop bop.

I have found some errors processing these changes:

* Error VALIDATING domainType: 'INFRA-KUBERNETES_POD' on synthesis - Exception: No entity matches 'INFRA-KUBERNETES_POD' synthesis rules for the given test data: 'k8s-ksm-via-opentelemetry-prometheus-receiver.json file - #1' data point. Please review test data and synthesis rules.

* Error VALIDATING domainType: 'INFRA-KUBERNETES_POD' on synthesis - Exception: No entity matches 'INFRA-KUBERNETES_POD' synthesis rules for the given test data: 'k8s-ksm-via-opentelemetry-prometheus-receiver.json file - #2' data point. Please review test data and synthesis rules.