fix _certMustNotExist()

cm.sh

@@ -92,9 +92,9 @@ function _certMustNotExist(){
 	if _certExists
 	then
 		echo "ERROR: cert ${CM_fqdn} was added already."
-		exit 1
-		# echo "Press Ctrl+C to abort within the next 10 sec..."
-		# sleep 10
+		# exit 1
+		echo "Press Ctrl+C to abort within the next 10 sec..."
+		sleep 10
 	fi
 }