[Integrated] RFR: Add gradle wrapper properties file to help IDEs

[Robin Westberg]

Changeset: 1f14c173
Author:    Robin Westberg <rwestberg at openjdk.org>
Date:      2020-02-28 09:06:20 +0000
URL:       https://git.openjdk.java.net/skara/commit/1f14c173

Add gradle wrapper properties file to help IDEs

Reviewed-by: ehelin

+ gradle/wrapper/gradle-wrapper.properties