JDK 10 RFR of JDK-8182421: Add @modules to java/nio/charset/coders/SJISMappingPropTest.java

[Amy Lu]

java/nio/charset/coders/SJISMappingPropTest.java

I forgot to add module dependency when converting this test to java version.
Please review the patch to add

@modules jdk.charsets

Thanks,
Amy

--- a/test/java/nio/charset/coders/SJISMappingPropTest.java
+++ b/test/java/nio/charset/coders/SJISMappingPropTest.java
@@ -26,6 +26,7 @@
  * @bug 4879123
  * @summary Verify that sun.nio.cs.map property interpreted in ja 
multibyte locales
  * @requires (os.family != "windows")
+ * @modules jdk.charsets
  * @library /test/lib
  * @build jdk.test.lib.Utils
  *        jdk.test.lib.Asserts