changing RNC schema to strict version on test files

Signed-off-by: greenTara <taraathan@gmail.com>
allowing multiple formulas in generic Operator

Signed-off-by: greenTara <taraathan@gmail.com>
adding a "strict" version of any_content that accepts any namespace, not just foreign namespaces

Signed-off-by: greenTara <taraathan@gmail.com>