Fix Bottle::Filename.new for taps

The file name of a bottle should not include the tap.

Library/Homebrew/software_spec.rb

@@ -252,7 +252,7 @@ class Bottle
     end
 
     def initialize(name, version, tag, rebuild)
-      @name = name
+      @name = File.basename name
       @version = version
       @tag = tag.to_s.gsub(/_or_later$/, "")
       @rebuild = rebuild

Library/Homebrew/test/bottle_filename_spec.rb

@@ -4,7 +4,7 @@ require "software_spec"
 describe Bottle::Filename do
   subject { described_class.new(name, version, tag, rebuild) }
 
-  let(:name) { "foo" }
+  let(:name) { "user/repo/foo" }
   let(:version) { "1.0" }
   let(:tag) { :tag }
   let(:rebuild) { 0 }