remove old scripts before cloning

manager/minerva-manager.sh

@@ -48,6 +48,7 @@ function install_minerva() {
 		exit 2
 	fi
 	ssh $host "sudo apt-get update; sudo apt-get install -y sudo git"
+	ssh $host "rm -rf minerva-scripts"
 	ssh $host "git clone https://git-r3lab.uni.lu/piotr.gawron/minerva-scripts.git"
 	ssh $host "sudo ./minerva-scripts/server/create-partition.sh"
 	ssh $host "sudo ./minerva-scripts/server/install.sh"