Update github.com/xenolf/lego to 0.4.1

vendor/google.golang.org/api/googleapi/internal/uritemplates/utils.go

@@ -4,10 +4,14 @@
 
 package uritemplates
 
-func Expand(path string, values map[string]string) (string, error) {
+// Expand parses then expands a URI template with a set of values to produce
+// the resultant URI. Two forms of the result are returned: one with all the
+// elements escaped, and one with the elements unescaped.
+func Expand(path string, values map[string]string) (escaped, unescaped string, err error) {
 	template, err := parse(path)
 	if err != nil {
-		return "", err
+		return "", "", err
 	}
-	return template.Expand(values), nil
+	escaped, unescaped = template.Expand(values)
+	return escaped, unescaped, nil
 }