nginx-zabbix: Let systemd restart us on SIGPIPE

For some reason tail behaves strangely and the code that should trap the
PIPE signal doesn't seem to do that. Let it die for now to maybe better
see what happens.
Signed-off-by: Florian Pritz <bluewind@xinu.at>

roles/zabbix-agent/files/nginx-zabbix.pl

@@ -17,7 +17,7 @@ my @nginx_log_file_paths = glob("/var/log/nginx/*-access.log /var/log/nginx/*/ac
 
 @nginx_log_file_paths = ("./test-access.log") if $devmode;
 
-$SIG{PIPE} = 'IGNORE';
+#$SIG{PIPE} = 'IGNORE';
 
 sub trim {
 	my $str = shift;

roles/zabbix-agent/files/nginx-zabbix.service

@@ -4,6 +4,7 @@ After=nginx.service
 
 [Service]
 ExecStart=/usr/local/bin/nginx-zabbix.pl
+Restart=on-failure
 
 [Install]
 WantedBy=multi-user.target