Upgrade Java version for export in git_gerrit_pull

Change-Id: I6ef76319694a5c3c4ad8c6245f8ea1b32cd216d5
diff --git a/bin/git_gerrit_pull b/bin/git_gerrit_pull
index 8f4561a..bb4b6c8 100755
--- a/bin/git_gerrit_pull
+++ b/bin/git_gerrit_pull
@@ -64,7 +64,7 @@
 
 # KalamarExport-Plugin
 elsif ($project =~ m!^Kalamar-Plugin-Export$!i) {
-  _check('JAVA_HOME="'.$JAVA8_HOME.'" mvn clean test');
+  _check('JAVA_HOME="'.$JAVA17_HOME.'" mvn clean test');
 }
 
 # Koral
@@ -157,4 +157,5 @@
 Prerequisites:
 Remote repository "github"
 For Kustvakt and Koral Java 11 at /usr/lib/jvm/java-1.11.0-openjdk-amd6
-For KorapSRU and KalamarExport-Plugin Java 8 at /usr/lib/jvm/java-1.8.0-openjdk-amd6
+For KorapSRU Java 8 at /usr/lib/jvm/java-1.8.0-openjdk-amd6
+For KalamarExport-Plugin Java 17 at /usr/lib/jvm/java-17-openjdk-amd64