BUG/BUILD: replace haproxy-systemd-wrapper with $(EXTRA) in install-bin.

[wt: this should be backported to 1.6 and 1.5 as well since some platforms
 don't build the systemd-wrapper]
(cherry picked from commit 796d2fc136359c31c5c35f00c0751890ab42a016)
(cherry picked from commit 9d0b47d96825b0584ea81c826a96ed8babcc016b)
1 file changed