Add DiscountType supporting Discounts LM

Author: v-rudkovskiy

NetLicensingClient/src/main/java/com/labs64/netlicensing/domain/vo/DiscountType.java

@@ -0,0 +1,26 @@
+package com.labs64.netlicensing.domain.vo;
+
+public enum DiscountType {
+    FIX,
+
+    PERCENT;
+
+    public static DiscountType parseValue(final String discountType) {
+        if (discountType != null) {
+            for (final DiscountType type : DiscountType.values()) {
+                if (discountType.equalsIgnoreCase(type.name())) {
+                    return type;
+                }
+            }
+        }
+        throw new IllegalArgumentException(discountType);
+    }
+
+    public static DiscountType parseValueSafe(final String discountType) {
+        try {
+            return parseValue(discountType);
+        } catch (final IllegalArgumentException e) {
+            return null;
+        }
+    }
+}