Change the registry used on windows tests

**Describe the problem/challenge you have**
When running the tests in windows instead of relying on ttl.sh ephemeral registry we should explore other options since we have seen, lately, tests flaking because the images were removed from the registry

**Describe the solution you'd like**
look for an equivalent image to `registry:v2` or eventually create a binary that run a simple registry for us to do tests.

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Start by locating the Windows test setup and every use of the ttl.sh ephemeral registry, then inspect how the registry:v2 image is exercised. Compare a stable equivalent registry or a small test binary, and consider the work done when Windows tests no longer depend on images that may be removed and stop flaking for this reason.

Written by the indexing model from the issue text.