resource type case-insensitive validation

Author: sureshanaparti

api/src/main/java/org/apache/cloudstack/api/ApiCommandResourceType.java

@@ -127,8 +127,8 @@ public String toString() {
     }
 
     public static ApiCommandResourceType fromString(String value) {
-        if (StringUtils.isNotEmpty(value) && EnumUtils.isValidEnum(ApiCommandResourceType.class, value)) {
-            return valueOf(value);
+        if (StringUtils.isNotBlank(value) && EnumUtils.isValidEnumIgnoreCase(ApiCommandResourceType.class, value)) {
+            return EnumUtils.getEnumIgnoreCase(ApiCommandResourceType.class, value);
         }
         return null;
     }