Support new version policy

[DifferentialOrange]

Since 2.10, Tarantool have a new release policy: https://www.tarantool.io/en/doc/latest/release/policy/

For example, versions like 2.10.0-beta1 is possible now. Versions with -alphaN, -betaN, -rcN and -entrypoint suffixes are prior to non-suffixed one. It is possible that 2.10.0-beta1 will not have all features that supported by 2.10.0. But now version restrictions in code and tests do not support new release policies.

Also it may be needed to rework approach to extracting a version for a connection. For example, when box.info.version and _TARANTOOL is 2.10.0-beta2-91-g08c9b4963-r472, greeting returns Tarantool 2.10.0 (Binary) string.