update the test configuration for all tests

[RomanBelozerov]

We have a lot of the tests with simple configuration and this is too different from the real configuration. So we should change configuration in all tests. For example: enable access_log or config from tempesta-tech.com site. (see t_sites tests).

Probably, we need to create the default config for that. For example:

listen 443 proto=h2,https;
listen 80 proto=http;

access_log on;

cache 2;
cache_fulfill * *;
cache_methods GET HEAD;

srv_group main {server ${server_ip}:8000;}

block_action attack reply;
block_action error reply;

tls_certificate ${tempesta_workdir}/tempesta.crt;
tls_certificate_key ${tempesta_workdir}/tempesta.key;
tls_match_any_server_name;

vhost main {
    location suffix "/" {
        proxy_pass main;
    }
    proxy_pass main;
}

http_chain {-> main;}