Revert "Changed enabled() and display() methods of linked topology provider to only return true if linkd topology is selected. Changed some stuff in VMware topology provider to reflect the API changes."

This reverts commit f017465fd942ec097bdac34ed3413ac327816863.
Revert "Fixed broken test of linkd"

This reverts commit 8c916788c4f22a7a68ee15e1480440d988867f02.