fix(test): configuration changes and fixes needed to scale-test

[alexcastilio]

Description

Changes:

• move env var name OUTPUT_FILEPATH to common/common.go
• adjust timeout for diferent steps
• enable operator in retina legacy helm chart installation
• add retries to kube api requests to make it more robust to eventual failures in responses
• add podStatus to metrics exported
• add retina operator to get metrics from
• other small fixes and improvements
• revert kapinger version to previous version used in e2e tests (based on logs current image version only shows dns queries, no tcp and udp requests)

Related Issue

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Checklist

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• I have tested the changes locally.
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• I have updated the documentation, if necessary.
• I have added tests, if applicable.

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