Remove cr1-sdtpa/csw1-sdtpa, fix crosslinks DNS

Change-Id: I8a4fdcd8c2d58d5027e8244faa5843bc4ba65f98
Kill DNS for sdtpa mgmt hosts (asw, cam, ps, scs)

Change-Id: Ib9fad35471bab80ceede237e0c70c85d68014c8b