haproxy: upgrade haproxy to version 1.5.0

haproxy
    - today the final new stable 1.5.0 was announced.
	- includes support for SSL Termination, Compression Offloading, OCSP
	  Stapling support and much more
        - add new package halog that can be used to parse haproxy logs

Signed-off-by: Thomas Heil <heil@terminal-consulting.de>