tap-new: improve output.

Note the tap path.

References #5901.

Library/Homebrew/dev-cmd/tap-new.rb

@@ -66,6 +66,8 @@ module Homebrew
             displayName: Run brew test-bot
     YAML
     write_path(tap, "azure-pipelines.yml", azure)
+    ohai "Created #{tap}"
+    puts tap.path.to_s
   end
 
   def write_path(tap, filename, content)

Library/Homebrew/test/dev-cmd/tap-new_spec.rb

@@ -2,7 +2,7 @@ describe "brew tap-new", :integration_test do
   it "initializes a new Tap with a ReadMe file" do
     expect { brew "tap-new", "homebrew/foo", "--verbose" }
       .to be_a_success
-      .and not_to_output.to_stdout
+      .and output(%r{homebrew/foo}).to_stdout
       .and not_to_output.to_stderr
 
     expect(HOMEBREW_LIBRARY/"Taps/homebrew/homebrew-foo/README.md").to exist