Run sciond's as part of the infrastructure. (#1017)
Run sciond's as part of the infrastructure. (#1017)

For the normal local testing setup, this will run a sciond per AS. For
mininet, it will run a sciond per CS element.

In the near future CS will require a running sciond to function.

Based on work by https://github.com/Oncilla
FR4NK-W/osourced-scion,netsec-ethz/scion,dmpiergiacomo/scion,FR4NK-W/osourced-scion,FR4NK-W/osourced-scion,netsec-ethz/scion,klausman/scion,klausman/scion,klausman/scion,Oncilla/scion,Oncilla/scion,FR4NK-W/osourced-scion,netsec-ethz/scion,dmpiergiacomo/scion,dmpiergiacomo/scion,Oncilla/scion,klausman/scion,Oncilla/scion,FR4NK-W/osourced-scion,dmpiergiacomo/scion,klausman/scion,dmpiergiacomo/scion,dmpiergiacomo/scion,netsec-ethz/scion