[aws for fluentbit] support pod labels in the chart

[nwsparks]

Is your feature request related to a problem?

Sort of. Without being able to add pod labels to the pods this chart creates we cannot use templated log group names with it and it results in us having to exclude these pods from logging.

Is your feature request related to a specific Helm chart, if yes mention name of the chart?

aws for fluentbit

Describe the solution you'd like

add a podLabels value to the helm chart