Fix host regex to be more open (anything but a semicolon).
Fix host regex to be more open (anything but a semicolon).

Symptom was that it wasn't catching hyphens; rather than keep tacking on
exceptions, realized what I really meant was "anything at all, except a
semicolon, which is not a legal hostname char anyway, and signifies a port
number".

akaariai/fabric,tekapo/fabric,getsentry/fabric,felix-d/fabric,simon-engledew/fabric,bspink/fabric,bitprophet/fabric,ericholscher/fabric,opavader/fabric,rane-hs/fabric-py3,StackStorm/fabric,SamuelMarks/fabric,kxxoling/fabric,MjAbuz/fabric,sdelements/fabric,kmonsoor/fabric,hrubi/fabric,tolbkni/fabric,elijah513/fabric,rodrigc/fabric,raimon49/fabric,likesxuqiang/fabric,mathiasertl/fabric,askulkarni2/fabric,bitmonk/fabric,pgroudas/fabric,ploxiln/fabric,TarasRudnyk/fabric,fernandezcuesta/fabric,xLegoz/fabric,cmattoon/fabric,cgvarela/fabric,rbramwell/fabric,haridsv/fabric,qinrong/fabric,amaniak/fabric,jaraco/fabric,pashinin/fabric,itoed/fabric