Improve route logic in visor side

[mrpalide]

Did you run make format && make check? Yes

Fixes #_

Changes:

• change default (and hardcoded) value of max_hop from 50 to 1000. (not included on visor config)
• change default value of min_hop in config from 0 to 1. 0 was meaningless.
• add retrier on trying find route by skysocks-client
• fix data race found in skysocks-client (Data race in sky socks-client #1923)

How to test this PR:

• for check change minhop value in config, generate a config
• for retry function, run visor, start skysock-client with dummy but correct PK as skysocks server PK, check logs

[0pcom]

looks good