Collect and run all IPU tests

[kaushikb11]

What does this PR do?

Similar to #11098

Does your PR introduce any breaking changes? If yes, please list them.

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Did you have fun?

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cc @carmocca @akihironitta @Borda @SeanNaren

[Borda]

yep nice improvement on stability and scalability :]
just wondering how long it may take because we had to do this trimming on purpose back then

[tchaton]

LGTM ! Requires to use RunIf(ipu=True) for all the ipu tests.

[Borda]

just for the record :)