Enable spark logging on executors

ansible/files/bootstrap/telemetry.sh

@@ -178,16 +178,16 @@ if [ ! -z $TIMEOUT ]; then
     sudo shutdown -h +$TIMEOUT&
 fi
 
-# Continue only if master node
-if [ "$IS_MASTER" = false ]; then
-    exit
-fi
-
 # Setup Spark logging
 sudo mkdir -p /mnt/var/log/spark
 sudo chmod a+rw /mnt/var/log/spark
 touch /mnt/var/log/spark/spark.log
 
+# Continue only if master node
+if [ "$IS_MASTER" = false ]; then
+    exit
+fi
+
 # Setup R environment
 cd /mnt
 wget -nc https://mran.microsoft.com/install/RRO-3.2.1-el6.x86_64.tar.gz