add channel_id tls extension number.

This number is not IANA defined, but we see it being
actively used.
Fix memory leak in modbus analyzer.

Would happen if there's a 'modbus_read_fifo_queue_response'
event handler.
Increase timeouts of some unit tests.
Merge remote-tracking branch 'origin/fastpath'

* origin/fastpath:
  Increase timeouts of some unit tests.
  Fix memory leak in modbus analyzer.
  add channel_id tls extension number.
Revert "Expanding the HTTP methods used in the signature to detect HTTP traffic."

This reverts commit 506b26e5ff137f61e087292c0b62453086f5fca9.

The corresponding patch adding HTTP CONNECT support doesn't work yet
so backing this out until we get that in shape.