zabbix: update to zabbix 3.0.1

zabbix-agent doesn't exist anymore since 3.0

'-f' option (foreground) is now in zabbix-agentd

003-change-user-and-foreground.patch fixes pending
issue https://support.zabbix.com/browse/ZBX-10611

you might need to update your config file to add
LogType=system

Signed-off-by: Etienne CHAMPETIER <champetier.etienne@gmail.com>

admin/zabbix/patches/003-change-user-and-foreground.patch

@@ -0,0 +1,17 @@
+--- a/src/libs/zbxnix/daemon.c
++++ b/src/libs/zbxnix/daemon.c
+@@ -300,11 +300,14 @@ int	daemon_start(int allow_root, const c
+ 
+ 	if (0 == allow_root && 0 == getuid())	/* running as root? */
+ 	{
++#if 0
++/* allow changing user and foreground */
+ 		if (0 != (flags & ZBX_TASK_FLAG_FOREGROUND))
+ 		{
+ 			zbx_error("cannot run as root!");
+ 			exit(EXIT_FAILURE);
+ 		}
++#endif
+ 
+ 		if (NULL == user)
+ 			user = "zabbix";