Adds support for six new datacenters

* Adds endpoints for SJC01, HKG02, LON02, TOR01, MEL01, PAR01

* The way the endpoints map is constructed is now a bit simpler;
  rather than explicitly specifying a dict for every single one,
  the appropriate dict is created for each datacenter specified in
  object_storage.consts and included in the ENDPOINTS constant.

* Not explicitly spelling out every DC's two endpoints (private and
  public) just so happens to save us some PEP-8 complaints due to
  lines >=80 chars.

* Clean up some redundant stuff in setup.py