feat: 💥 deployment.podannotations support interpolation with tpl

[ivankatliarchuk]

What does this PR do?

Give users the ability to set up annotations with dynamic values, a handy feature to cut down on repetition. This comes in handy, especially when dealing with annotations that have extensive configurations and are crucial for autodiscovery.

Before

  deployment:
    podAnnotations:
      ad.datadoghq.com/traefik-internal.logs: |-
        [{
            "env" : "dev"
            "type": "exclude_at_match",
            "name": "exclude_traefik_subset_not_found_error",
            "pattern" : "Error while building TraefikService: subset not found for .*"
        }]

With the feature

  deployment:
    podAnnotations:
      ad.datadoghq.com/{{ template "traefik.name" . }}.logs: |-
        [{
            "env" : "{{ .Values.env }}"
            "type": "exclude_at_match",
            "name": "exclude_traefik_subset_not_found_error",
            "pattern" : "Error while building TraefikService: subset not found for .*"
        }]

Motivation

Issue #971

More

• Yes, I updated the tests accordingly
• Yes, I ran make test and all the tests passed

[darkweaver87]

LGTM

[mloiseleur]

@ivankatliarchuk Once linter test is fixedt, we should be able to merge it. See my suggestion.

[ivankatliarchuk]

Linter is resolved, thank you.