feature request: whitelist ip address

[iammeken]

Hi,

I think adding whitelisted ip address is good for VSF, especially for front-backend setup and dos.vcl.

Please also check:
https://puszcza.gnu.org.ua/software/vmod-remoteip/

[iammeken]

For example:

acl admin {
"127.0.0.1";
"1.2.3.4";
}

if (std.ip(req.http.X-VSF-Actual-IP, "0.0.0.0") !~ admin && req.url ~

[fgsch]

Hi. I will take a look but feel free to open PRs if you want and have the time.