REGTESTS: http_request_buffer: Add a barrier to not mix up log messages

Depending on the timing, time to time, the log messages can be mixed. A
client can start and be fully handled by HAProxy (including its log message)
before the log message of the previous client was emitted or received.  To
fix the issue, a barrier was added to be sure to eval the "expect" rule on
logs before starting the next client.

This patch should fix the issue #1847. It may be backported to all branches
containing this reg-tests.

(cherry picked from commit 05ed05b84a4898122568df48bebfd59746ebe2a2)
Signed-off-by: Willy Tarreau <w@1wt.eu>
(cherry picked from commit 3ed3f1cdf5b55e3f9b5acd1e9490c921ba038565)
Signed-off-by: Christopher Faulet <cfaulet@haproxy.com>
(cherry picked from commit 2d11c5dd2e36649719e7916d37222d63d4fd9473)
Signed-off-by: Christopher Faulet <cfaulet@haproxy.com>
1 file changed