Refactor imds tests and add tests for azure, gcp and oci
Use common fake_metadata code to create the meta data.
Add tests for azure, gcp and oci.
We now test all clouds, and have a way to set fake metadata for all clouds for future tests.
Use common fake_metadata code to create the meta data.
Add tests for azure, gcp and oci.
We now test all clouds, and have a way to set fake metadata for all clouds for future tests.