review ports sharing arch

[vdelendik]

let's inspect ports sharing we have to do to organize adb and potentially usbmuxd remote connection.
goal to hide as much as possible and do not expose extra ports.

For example if we deploy stf-agent-proxy near the devices we can organize routing for screen port using
nginx <-> agent-nginx <-> device container

wss://demo.zebrunner.farm/d/demo.zebrunner.farm/<udid>/7544/
->
wss://demo.zebrunner.farm/d/demo.zebrunner.farm/<device-container>/7544/

global nginx then should redirect to agent nginx:

    # Handle stf-providers
    location ~ "^/d/(?<stfprovider>([^/]+))/(?<udid>([^/]+))/(?<port>[0-9]+)/$" {
      proxy_pass http://$stfprovider:$STF-AGENT-PROXY-PORT/;
      proxy_http_version 1.1;
      proxy_set_header Upgrade $http_upgrade;
      proxy_set_header Connection upgrade;
      proxy_set_header X-Forwarded-For $remote_addr;
      proxy_set_header X-Real-IP $remote_addr;
    }

And agent nginx using device container routing goto screen port etc

[vdelendik]

still TBD if really need this complication. To identify it we have to double check functionality in 2.7 release. As I remember we removed mjpeg screen port sharing outside at all.