Increase HAP server timeout

Various gate jobs have failed with 504 timeouts. This patch makes the
hap client and server timeouts configurable in the user config so that
they can be raised in the gate.

closes-bug: #1402580

Change-Id: Ia9663eafd7934a76a1839a40a5e250eefdc2085e
Merge "Increase HAP server timeout"