autotest: fixed bash syntax

Tools/scripts/build_autotest.sh

@@ -25,14 +25,7 @@ newtagsuavcan=$(cd uavcan && git fetch --tags | wc -l)
 oldhashuavcan=$(cd uavcan && git rev-parse origin/master)
 newhashuavcan=$(cd uavcan && git rev-parse HEAD)
 
-if [ "$oldhash" = "$newhash" -a 
-     "$newtags" = "0" -a 
-     "$oldhashpx4" = "$newhashpx4" -a 
-     "$newtagspx4" = "0" -a 
-     "$oldhashnuttx" = "$newhashnuttx" -a 
-     "$newtagsnuttx" = "0" -a
-     "$oldhashuavcan" = "$newhashuavcan" -a 
-     "$newtagsuavcan" = "0" ]; then
+if [ "$oldhash" = "$newhash" -a "$newtags" = "0" -a "$oldhashpx4" = "$newhashpx4" -a "$newtagspx4" = "0" -a "$oldhashnuttx" = "$newhashnuttx" -a "$newtagsnuttx" = "0" -a "$oldhashuavcan" = "$newhashuavcan" -a "$newtagsuavcan" = "0" ]; then
     echo "no change $oldhash $newhash `date`" >> build.log
     exit 0
 fi