Add emitting of e2e test instance metrics

[jhaanvi5]

Description of changes:
Add emitting of e2e test instance metrics for release-0.19.

Documentation added/planned (if applicable):

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[eks-distro-bot]

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[eks-distro-bot]

@jhaanvi5: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
eks-anywhere-e2e-presubmit	e7122a4	link	true	/test eks-anywhere-e2e-presubmit
eks-anywhere-presubmit	e7122a4	link	true	/test eks-anywhere-presubmit

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