Up till now, NEO ignored uknown attributes in zeinfo
which could lead to undefined behavior. With this change
NEO will emit an error whenever an unknown attribute is
encountered.
Note : old behavior can be restored using new
IgnoreZebinUnknownAttributes debug environment variable
Resolves: NEO-11762
Signed-off-by: Chodor, Jaroslaw <jaroslaw.chodor@intel.com>