TT-836 rename integration-tests to e2e-tests

[tateexon]

This is to remove confusion between lower level integration tests and e2e tests that were named integration tests.

[jmank88]

This will require follow-up PRs in chainlink-* repos that import this module, right? Might want to set them all up together beforehand to ensure a speedy merge and minmal disruption.

[tateexon]

This will require follow-up PRs in chainlink-* repos that import this module, right? Might want to set them all up together beforehand to ensure a speedy merge and minmal disruption.

@jmank88 Yes, I plan to have them ready all shortly after this merges and plan to work with ccip directly for their merge.

[cl-sonarqube-production[bot]]

Quality Gate failed

Failed conditions
1 Security Hotspot

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[github-actions[bot]]

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