Split a spec example that depends on Hash iteration order into two
Split a spec example that depends on Hash iteration order into two

The REE problem mentioned in 27ed641d9 is not a REE problem, it's a spec
problem. We cannot rely on hash iteration order on 1.8. So instead we
use two spec examples with 1 hash key each.

ruby-amqp/amq-protocol,ruby-amqp/amq-protocol