🐛 Update CoreDNS tags and upgrade checks in e2e tests

[Ab-hishek]

Signed-off-by: Abhishek Agarwal [email protected]

What this PR does / why we need it:
Updates the CoreDNS image tags in the upgrade tests as well as improves the condition for checking whether the DNS deployment got upgraded successfully or not in upgrade tests.

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #6143

[linux-foundation-easycla]

• ❌ The commit (59ce326). This user is missing the User's ID, preventing the EasyCLA check. Consult GitHub Help to resolve.For further assistance with EasyCLA, please submit a support request ticket.

[k8s-ci-robot]

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[k8s-ci-robot]

Hi @Ab-hishek. Thanks for your PR.

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[Ab-hishek]

/easycla

[Ab-hishek]

Can somebody help me with the CLA signing? I did everything that is mentioned here -> https://github.com/kubernetes/community/blob/master/CLA.md. But still EasyCLA is not passing.

[furkatgofurov7]

/check-cla

[Ab-hishek]

I think I got the issue. My email is not a correct in the commit. I close this PR and raise a new one.