
### Environment

* Dubbo version: dubbo-2.6.4
* Operating System version: windows 10
* Java version: JDK1.8

When run the testcase(com.alibaba.dubbo.config.AbstractInterfaceConfigTest#checkApplication1) in windows environment,It will be wrong. 

So It should add scene judgement in windows environment(org.apache.dubbo.common.utils.ConfigUtils#loadProperties(java.lang.String, boolean, boolean),Line 220).

```java
if (fileName.startsWith("/")) {
````
change to
```java
if (fileName.startsWith("/")||fileName.matches("^[A-z]:\\\\\\S+$")) {
````
the testcase (com.alibaba.dubbo.config.AbstractInterfaceConfigTest#checkApplication1) will go well.





}
            if (value == null) {
                value = "";
            }
            matcher.appendReplacement(sb, Matcher.quoteReplacement(value));
        }
        matcher.appendTail(sb);
        return sb.toString();
    }
    public static Properties getProperties() {
        if (PROPERTIES == null) {
            synchronized (ConfigUtils.class) {
                if (PROPERTIES == null) {
                    String path = System.getProperty(Constants.DUBBO_PROPERTIES_KEY);
                    if (path == null || path.length() == 0) {
                        path = System.getenv(Constants.DUBBO_PROPERTIES_KEY);
                        if (path == null || path.length() == 0) {
                            path = Constants.DEFAULT_DUBBO_PROPERTIES;
                        }
                    }
                    PROPERTIES = ConfigUtils.loadProperties(path, false, true);
                }
            }
        }
        return PROPERTIES;
    }
    public static void setProperties(Properties properties) {
        PROPERTIES = properties;
    }
    public static void addProperties(Properties properties) {