Added more tests
Added more tests

 - TestPathSegmentGetHopsHash for PathSegment.get_hops_hash
 - TestPathSegmentGetPath for PathSegment.get_path

klausman/scion,netsec-ethz/scion,Oncilla/scion,netsec-ethz/scion,klausman/scion,FR4NK-W/osourced-scion,klausman/scion,dmpiergiacomo/scion,dmpiergiacomo/scion,netsec-ethz/scion,Oncilla/scion,netsec-ethz/scion,Oncilla/scion,klausman/scion,dmpiergiacomo/scion,Oncilla/scion,FR4NK-W/osourced-scion,FR4NK-W/osourced-scion,dmpiergiacomo/scion,dmpiergiacomo/scion,FR4NK-W/osourced-scion,FR4NK-W/osourced-scion,klausman/scion,dmpiergiacomo/scion