github-ci: enable Tarantool 2.10 in integration testing
github-ci: enable Tarantool 2.10 in integration testing

Testing for Tarantool 2.10 has been disabled in commit "github-ci: skip running
tests for tarantool 2.10" (763c73d63618ff22762de7f12d81b0229dd81b58) due to
issue #96. This patch reverts these changes because #96 is fixed.

Follows up #96

tarantool/memcached,tarantool/memcached