519993: upgraded gradle version to 4.0.1

Signed-off-by: Alexander Nehmer <a.nehmer@science-computing.de>
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index fc61209..9d178cd 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -3,4 +3,4 @@
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-2.11-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.0.1-bin.zip