Move all registry-support test resources inside the same directory

[thepetk]

Which area/kind this issue is related to?

/area registry

Issue Description

Atm each registry-support module has its own test resources directory which is used for testing purposes. As a result we have duplicate resources between modules, especially when those are related to registry stacks / samples.

This issue is suggesting to move all those resources in a single directory, remove duplicates and update all tests to point to this new directory.

Acceptance Criteria

• All modules of the registry-support use the same test resources directory.