Update mxj dependency to v2.7.0

vendor/github.com/clbanning/mxj/set.go

@@ -1,26 +0,0 @@
-package mxj
-
-import (
-	"strings"
-)
-
-// Sets the value for the path
-func (mv Map) SetValueForPath(value interface{}, path string) error {
-	pathAry := strings.Split(path, ".")
-	parentPathAry := pathAry[0 : len(pathAry)-1]
-	parentPath := strings.Join(parentPathAry, ".")
-
-	val, err := mv.ValueForPath(parentPath)
-	if err != nil {
-		return err
-	}
-	if val == nil {
-		return nil // we just ignore the request if there's no val
-	}
-
-	key := pathAry[len(pathAry)-1]
-	cVal := val.(map[string]interface{})
-	cVal[key] = value
-
-	return nil
-}