Fixes #23005 reduces retained logs in Jenkins

Signed-off-by: Steve Millidge <steve.millidge@payara.fish>
diff --git a/Jenkinsfile b/Jenkinsfile
index 3f56d9c..f5f5184 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -81,7 +81,7 @@
   
   options {
     // keep at most 50 builds
-    buildDiscarder(logRotator(numToKeepStr: '50'))
+    buildDiscarder(logRotator(numToKeepStr: '10'))
     
     // preserve the stashes to allow re-running a test stage
     preserveStashes()