Revert "net: use rcu_hashtable in net channel classifier"

This reverts commit dea7624a757177160c1f663918005a5a063fbc54 as it causes
regressions everywhere.

Signed-off-by: Avi Kivity <avi@cloudius-systems.com>
httpserver: fix rule for swagger-ui

The path is wrong.

Fixes #384.

Signed-off-by: Tomasz Grabiec <tgrabiec@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>