Update Kustvakt for Java 11

Change-Id: If0501692f43ce5959d4ec2915d8704d08b07e07e
diff --git a/bin/git_gerrit_pull b/bin/git_gerrit_pull
index f9ef2b8..872dd46 100755
--- a/bin/git_gerrit_pull
+++ b/bin/git_gerrit_pull
@@ -49,9 +49,9 @@
 
 # Kustvakt
 if ($path =~ m!Kustvakt/?$!) {
-  _check('cd core && JAVA_HOME="/usr/lib/jvm/java-1.8.0-openjdk-amd64" mvn clean install');
-  _check('cd lite && JAVA_HOME="/usr/lib/jvm/java-1.8.0-openjdk-amd64" mvn clean test');
-  _check('cd full && JAVA_HOME="/usr/lib/jvm/java-1.8.0-openjdk-amd64" mvn clean test');
+  _check('cd core && JAVA_HOME="/usr/lib/jvm/java-1.11.0-openjdk-amd64" mvn clean install');
+  _check('cd lite && JAVA_HOME="/usr/lib/jvm/java-1.11.0-openjdk-amd64" mvn clean test');
+  _check('cd full && JAVA_HOME="/usr/lib/jvm/java-1.11.0-openjdk-amd64" mvn clean test');
 }
 
 # KalamarExport-Plugin