Workaround for Outboud filrewall

[prekucki]

Problem described in #2539.

If we have outbound rule with https://accounts.google.com it does not work as excepted. Because Google does not return all addresses, only a single address randomly selected from a certain list. Then if, when the firewall activity starts, it asks for addresses for ... it will receive, for example, 172.253.116.84. but then if the same query comes from inside the container, a different address will be returned, e.g. 216.58.209.13. As a result, the container will not be able to reach the declared address.

Temporary solution:

• configure DNS that caches responses
• the address of this DNS will be found at stable-dns.dev.golem.network
• when starting the container, configure the firewall using this DNS
• DNS query from the container will be automatically redirected to the same caching DNS server.

[prekucki]

Version for tests: https://github.com/golemfactory/yagna/releases/tag/pre-rel-v0.13.0-outbound-fix