update(rules): revert exceptions in default ruleset

Exceptions have been introduced in commit 64a231b
The feature itself is very useful for more complex environments where
the simple conditions are difficult to handle.
However, many users reported that they find them difficult to understand so
we are doing a rollback of them in the default ruleset in favor of the
syntax without exceptions.

Signed-off-by: Lorenzo Fontana <lo@linux.com>