Update e2e test to use latest K8s version

[anusha94]

What steps did you take and what happened:
Currently, our e2e tests are pinned to K8s v1.22.3 version. That's because we only have v1.22.3 support in the installer. With #411 , we intend to make the installer more flexible. We should therefore move to testing higher K8s version.

Explore
Which K8s version needs to be tested and how frequently we have to update the tests can be tricky. For this, let's refer to CAPI and other providers' e2e tests to see what the current pattern of testing is. We can then make a call on which K8s version to pin to.

Anything else you would like to add:
This issue cannot be worked upon until #411 is completed. But in the meantime, it is good to do the exploration of identifying the K8s version in e2e tests.