-Move ValidatorConfig from wrong package to correct package

-Implement light-rest-4j networknt#64 for Swagger ValidatorHandler

Author: BalloonWen

src/main/java/com/networknt/schema/BaseJsonValidator.java

@@ -18,7 +18,6 @@
 
 import com.fasterxml.jackson.databind.JsonNode;
 import com.networknt.schema.url.URLFactory;
-import com.networknt.schema.url.ValidatorConfig;
 import org.apache.commons.lang3.StringUtils;
 import org.slf4j.Logger;
 

src/main/java/com/networknt/schema/JsonSchemaFactory.java

@@ -23,7 +23,6 @@
 import java.util.HashMap;
 import java.util.Map;
 
-import com.networknt.schema.url.ValidatorConfig;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 

src/main/java/com/networknt/schema/ValidationContext.java

@@ -1,7 +1,6 @@
 package com.networknt.schema;
 
 import com.fasterxml.jackson.databind.JsonNode;
-import com.networknt.schema.url.ValidatorConfig;
 
 public class ValidationContext {
     private final JsonMetaSchema metaSchema;

src/main/java/com/networknt/schema/url/ValidatorConfig.java src/main/java/com/networknt/schema/ValidatorConfig.java

@@ -1,4 +1,4 @@
-package com.networknt.schema.url;
+package com.networknt.schema;
 
 public class ValidatorConfig {
     /**