Some tests codes are not used, so just to cleanup them. Change-Id: I9596a54705150271ae6900a17448d9250af4f2db
1. move skyline_apiserver out of libs 2. remove libs folder 3. remove old skyline folder 4. adjust zull, devstack and dockerfile Change-Id: I27a4babd3df077d1dfc7555f67a6ea618d4b2966