Metrics customFilters should apply to aggregated metrics

[dmduggan]

What happened: Expected customFilters to be applied to all metrics. Only showed on kube.container.**.

What you expected to happen: I believe it also needs to be applied to aggregated metrics.

How to reproduce it (as minimally and precisely as possible):

Using following values:

    customFilters:
      custom_metadata:
        tag: kube.**
        type: record_modifier
        body: |-
          @id custom_metadata
          <record>
            cluster_region us-west-2
          </record>

Anything else we need to know?:

Probably just need to copy this code between two config maps in metrics chart.

    # = custom filters specified by users =
    {{- range $name, $filterDef := .Values.customFilters }}
    {{- if and $filterDef.tag $filterDef.type }}
    <filter {{ $filterDef.tag }}>
      @type {{ $filterDef.type }}
      {{- if $filterDef.body }}
      {{ $filterDef.body | indent 8 }}
      {{- end }}
    </filter>

Environment:

• Kubernetes version (use kubectl version): 1.19.8
• Ruby version (use ruby --version): N/A (docker image)
• OS (e.g: cat /etc/os-release):
• Splunk version: 7.3.2
• Splunk Connect for Kubernetes helm chart version: 1.4.7
• Others:

[hvaghani221]

Now you can apply custom filters using customFiltersAggr config.
So, it should look like

    customFiltersAggr:
      custom_metadata:
        tag: kube.**
        type: record_modifier
        body: |-
          @id custom_metadata
          <record>
            cluster_region us-west-2
          </record>