Fix tests that erroneously assert upper-case keys
Fix tests that erroneously assert upper-case keys

Kriechi/hyper-h2,Kriechi/hyper-h2,vladmunteanu/hyper-h2,vladmunteanu/hyper-h2,bhavishyagopesh/hyper-h2,python-hyper/hyper-h2,python-hyper/hyper-h2