Force $DEST to have wider permissions

This is particularly useful in the case where we create the
home directory above and the permissions are too strict.

Other users, such as the apache user, need read/execute for this
directory.

Change-Id: I908d993dbcd863b482030afcc04e5e7b9f4cffa1

stack.sh

@@ -234,8 +234,10 @@ else
 fi
 
 # Create the destination directory and ensure it is writable by the user
+# and read/executable by everybody for daemons (e.g. apache run for horizon)
 sudo mkdir -p $DEST
 sudo chown -R $STACK_USER $DEST
+chmod 0755 $DEST
 
 # a basic test for $DEST path permissions (fatal on error unless skipped)
 check_path_perm_sanity ${DEST}