Add test notebooks to catch the ubi9 images and fix the version name

[atheo89]

This PR adds test Notebook objects to catch the ubi9 images on tests/resources/notebook-controller/notebooks/ folder as well as it fixes the tag version name on spec.container.image field on the cuda notebooks which is connected with the: #822

Fixes: opendatahub-io/notebooks#100

Merge criteria:

• The commits are squashed in a cohesive manner and have meaningful messages.
• Testing instructions have been added in the PR body (for PRs involving changes that are not immediately obvious).
• The developer has manually tested the changes and verified that the changes work

[openshift-ci]

Skipping CI for Draft Pull Request.
If you want CI signal for your change, please convert it to an actual PR.
You can still manually trigger a test run with /test all

[harshad16]

/lgtm
/approve

thanks for fixing the naming as well.

[harshad16]

/hold

Till PR :#822 is merged.

[atheo89]

/hold

Till PR :#822 is merged.

We should do the opposite! Update the repo with the new tests and then merge the other

[atheo89]

/unhold

[harshad16]

/lgtm
/approve

Thanks 💯

[openshift-ci]

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