Add "Upstream-Contact: TODO" to generated debian/copyright

as mentors.debian.net seems to require this field, and if missing,
would display the following warning:
    RFS: author info missing
    Upstream-Contact: was not found in d/copyright.
    RFS will not autocomplete the Upstream author.

Author: anthonyfok

template.go

@@ -212,8 +212,9 @@ func writeDebianCopyright(dir, gopkg string, vendorDirs []string, hasGodeps bool
 	}
 
 	fmt.Fprintf(f, "Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/\n")
-	fmt.Fprintf(f, "Source: %s\n", getHomepageForGopkg(gopkg))
 	fmt.Fprintf(f, "Upstream-Name: %s\n", filepath.Base(gopkg))
+	fmt.Fprintf(f, "Upstream-Contact: TODO\n")
+	fmt.Fprintf(f, "Source: %s\n", getHomepageForGopkg(gopkg))
 	if len(vendorDirs) > 0 || hasGodeps {
 		fmt.Fprintf(f, "Files-Excluded:\n")
 		for _, dir := range vendorDirs {