Epic Goal

As a user creating policies I would like to use the lookup function to return objects based on labels.  Currently the lookup will return all objects of a given type , however there isn't a way to limit what is returned. 

Kubernetes uses labels as a selector, the lookup function should also allow this

Why is this important?

Would make it easier to create policies using the new raw template function.

Scenarios

Allow using lookup template with z-n number of labels specified.

{{- range $tst := (lookup "v1" "Pod" "" "").items }}
{{- range $tst := (lookup "v1" "Pod" "" "" "env=dev").items }}
{{- range $tst := (lookup "v1" "Pod" "" "" "env in (uat,production)").items }}
{{- range $tst := (lookup "v1" "Pod" "" "" "appversion=2" "env in (uat,production)").items }}

Acceptance Criteria

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Dependencies (internal and external)

1. ...

Previous Work (Optional):

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Open questions:

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Done Checklist

• CI - CI is running, tests are automated and merged.
• Release Enablement <link to Feature Enablement Presentation>
• DEV - Upstream code and tests merged: <link to meaningful PR or GitHub
  Issue>
• DEV - Upstream documentation merged: <link to meaningful PR or GitHub
  Issue>
• DEV - Downstream build attached to advisory: <link to errata>
• QE - Test plans in Polarion: <link or reference to Polarion>
• QE - Automated tests merged: <link or reference to automated tests>
• DOC - Downstream documentation merged: <link to meaningful PR>