tt CLI (2.10): fixed using of IPv6 in some tt commands

**Product:** tt CLI
**Since:** tt 2.10.0
**Dev ticket:** 
**Root document:** https://www.tarantool.io/en/doc/latest/reference/tooling/tt_cli/

**SME:** @ AlexandrLitkevich @ oleg-jukovec 

# Details

tt connect|replicaset|cluster|aeon|play: fixed using of IPv6 in instance URI.

Requested by @elhimov in https://github.com/tarantool/tt/commit/d7472a34af6dea99c3ea54e20c059a9a882f01ab.