Add httplib errors into excepts.
Add httplib errors into excepts.

matthewdupre/felix,ocadotechnology/calico,neiljerram/felix,neiljerram/felix,anortef/calico,TrimBiggs/calico,alexhersh/calico,kasisnu/calico,matthewdupre/felix,alexhersh/calico,neiljerram/felix,Metaswitch/calico,neiljerram/felix,Metaswitch/calico,kasisnu/calico,anortef/calico,ocadotechnology/calico,beddari/calico,TrimBiggs/calico,beddari/calico