bugfix/CSTACKEX-169: remove unwanted change

Author: Srivastava, Piyush

plugins/storage/volume/ontap/src/main/java/org/apache/cloudstack/storage/feign/model/ExportRule.java

@@ -19,11 +19,9 @@
 
 package org.apache.cloudstack.storage.feign.model;
 
-import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
-import com.fasterxml.jackson.annotation.JsonValue;
 import java.util.List;
 
 /**
@@ -56,7 +54,6 @@ public enum ProtocolsEnum {
             this.value = value;
         }
 
-        @JsonValue
         public String getValue() {
             return value;
         }
@@ -66,11 +63,9 @@ public String toString() {
             return String.valueOf(value);
         }
 
-        @JsonCreator
         public static ProtocolsEnum fromValue(String text) {
-            if (text == null) return null;
             for (ProtocolsEnum b : ProtocolsEnum.values()) {
-                if (text.equalsIgnoreCase(b.value)) {
+                if (String.valueOf(b.value).equals(text)) {
                     return b;
                 }
             }