Allow unix:/foo/ socket URLs
Allow unix:/foo/ socket URLs

The current regex requires unix://, which doesn't really make sense for unix sockets. A single forward slash is all that's required, and all that Puma and Nginx expect. In fact, it's even the default value for `fetch(:puma_bind)`.
hoppinger/capistrano-puma,seuros/capistrano-puma,sime/capistrano-puma,hoppinger/capistrano-puma,franckdelage/capistrano-puma,jeizsm/capistrano-puma,linjunpop/capistrano-puma,linjunpop/capistrano-puma,h0lyalg0rithm/capistrano-puma,h0lyalg0rithm/capistrano-puma,mpospelov/capistrano-puma,mpospelov/capistrano-puma,jeizsm/capistrano-puma,lhagemann/capistrano-puma,sime/capistrano-puma,hbin/capistrano-puma,hbin/capistrano-puma,agencyleroy/capistrano-puma,mpospelov/capistrano-puma,kgiszczak/capistrano-puma,agencyleroy/capistrano-puma,JFimex/capistrano-puma,h0lyalg0rithm/capistrano-puma,sime/capistrano-puma,seuros/capistrano-puma,kgiszczak/capistrano-puma,linjunpop/capistrano-puma,agencyleroy/capistrano-puma,JFimex/capistrano-puma,hoppinger/capistrano-puma,hbin/capistrano-puma,kgiszczak/capistrano-puma,franckdelage/capistrano-puma,lhagemann/capistrano-puma,JFimex/capistrano-puma,lhagemann/capistrano-puma,franckdelage/capistrano-puma,jeizsm/capistrano-puma