Steps to reproduce:

1. Have two servers, one with plain HTTP, second with HTTPS with redirection http→https
2. In template, create HTTP agent item with GET reuest pointing into http://\{host.conn}/api/some/url
3. Zabbix works for HTTP server, but doesn't follow 302 http→https

Configuration is as in screenshot Opera Zdjecie_2019-03-22_175623_zabbix.png

Result:
One host collects its' data, other one is left in unsupported state
Expected:
I'd like Zabbix to follow 302 redirection and re-request item data using new URL provided by http server.