Signed broker topics

[Snawoot]

Closes https://github.com/mysteriumnetwork/infra/issues/63

node containing these changes should be released only after nats-proxy will be deployed.

[codecov-commenter]

Codecov Report

Merging #4063 (b5e7b04) into master (c822f9d) will decrease coverage by 2.14%.
The diff coverage is 52.54%.

@@            Coverage Diff             @@
##           master    #4063      +/-   ##
==========================================
- Coverage   42.91%   40.76%   -2.15%     
==========================================
  Files         332      333       +1     
  Lines       17679    17708      +29     
==========================================
- Hits         7587     7219     -368     
- Misses       9324     9798     +474     
+ Partials      768      691      -77     

Impacted Files	Coverage Δ
communication/nats/signed.go	0.00% <0.00%> (ø)
p2p/listener.go	0.00% <0.00%> (-62.33%)	⬇️
communication/nats/sender.go	52.38% <55.55%> (-4.38%)	⬇️
communication/nats/receiver.go	38.04% <58.33%> (-1.04%)	⬇️
core/discovery/brokerdiscovery/messaging_ping.go	100.00% <100.00%> (ø)
...re/discovery/brokerdiscovery/messaging_register.go	100.00% <100.00%> (ø)
.../discovery/brokerdiscovery/messaging_unregister.go	63.63% <100.00%> (-36.37%)	⬇️
core/discovery/brokerdiscovery/registry.go	100.00% <100.00%> (ø)
p2p/net_default.go	0.00% <0.00%> (-100.00%)	⬇️
p2p/common.go	0.00% <0.00%> (-66.67%)	⬇️
... and 13 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update c822f9d...b5e7b04. Read the comment docs.