Revert "move nova-tox-functional to experimental until there is content"

This reverts commit 1a303ef6cd382b8fc9de5f0e292ece55effed8ed.

Change-Id: I3d8e451937f2ad99f742e6e55b7dd5144dd7e7c7
Merge "Revert "move nova-tox-functional to experimental until there is content""