[common]参数实体校验更新，fixIP域名校验

common/src/main/java/com/usthe/common/entity/manager/Param.java

@@ -60,7 +60,6 @@ public class Param {
      */
     @ApiModelProperty(value = "参数值", example = "8080", accessMode = READ_WRITE, position = 3)
     @Length(max = 255)
-    @NotNull
     private String value;
 
     /**

common/src/main/java/com/usthe/common/util/IpDomainUtil.java

@@ -27,6 +27,9 @@ public class IpDomainUtil {
      * @return true-yes false-no
      */
     public static boolean validateIpDomain(String ipDomain) {
+        if (ipDomain == null || "".equals(ipDomain)) {
+            return false;
+        }
         if (LOCALHOST.equalsIgnoreCase(ipDomain)) {
             return true;
         }