vanguards: Make client rend circuits be STUB+.
According to the vanguards spec, client rendezvous circuits should be STUB+:
- lite:
C -> G -> L2 -> Rend
- full:
C -> G -> L2 -> L3 -> Rend
According to the vanguards spec, client rendezvous circuits should be STUB+:
C -> G -> L2 -> Rend
C -> G -> L2 -> L3 -> Rend