test(sdk): Components tests - Made test_load_component_from_url hermetic (#4121)
test(sdk): Components tests - Made test_load_component_from_url hermetic (#4121)

Mocking the `requests.get` call so that the test can run without internet.
kubeflow/pipelines,kubeflow/pipelines,kubeflow/pipelines,kubeflow/pipelines,kubeflow/pipelines,kubeflow/pipelines