[Epic] Encryption in iproto

[patiencedaur]

Total: 7pt

Related dev issues: https://github.com/tarantool/roadmap-internal/issues/38 (preparation), https://github.com/tarantool/roadmap-internal/issues/81

SME: @ locker, @ EvgenyMekhanik

In Tarantool EE, it is now possible to encrypt the iproto traffic. The feature itself should be described in https://www.tarantool.io/en/enterprise_doc/

In Tarantool CE, it’s now possible to pass several listening URIs in different ways with different properties (as an array of tables with uri and params fields in particular, tarantool#5928 by Evgeny Mekhanik). Examples.
Passing URI parameters as a table is necessary for configuring the iproto encryption and should be described in the CE documentation.

Tasks

• implement ability to pass several URIs in different ways #2492 (tech debt)
• https://github.com/tarantool/enterprise_doc/issues/137