Log Message:
haproxy: updated to 2.0.8

HAProxy 2.0.8 was released on 2019/10/23. It added 47 new commits
after version 2.0.7.

There is one bug tagged major but also a significant number of medium bugs
which arguably have more chances to impact more people so I preferred not
to wait too long before a release.

The main fix is a risk of random crash when running with connection pools
on more than 32 threads, due to a mask calculation error causing the idle
connections cleanup task to be scheduled on wrong threads for threads 32
and above.

Other issues concern the risk of seeing an applet being killed when running
too fast, as was reported a few times with the peers applet on reloads. The
redirects were broken when HTX is disabled, a 503 could be returned. The
cache could cache absolute URIs still using the Host header as a key, which
is not a good idea as the authority in the URI has precedence. Some crashes
have been fixed in connection aborts in TCP and legacy mode. Some H2
connections would occasionally not time out if a stream was still waiting
on flow control. On some rare occasions in HTX mode the last CRLF after a
chunked encoded transfer could fail to be copied if only the CR could fit
into the buffer, resulting in a transfer error for the client. Looking up
stick-table keys from Lua could segfault. The pattern LRU cache was
inappropriately shared between threads, creating a bottleneck around its
lock. The dh-param setting was ignored on openssl 1.1.1 and above, often
resulting in slower transfers or even handshake failures when connecting to
servers supporting smaller keys.