Assert that instance UUID is not empty

fix server panic on ping

added support for setting result' unmarshal mode for the whole connec…

…tion

Fix auth tests for Tarantool >= 2.11.0

Cleanup

Add an option which should enable setting a custom server ping status

Ooops

Default ReaderBufSize to 16KiB

Cap the maximum size of a binary packet returned to the pool

Add global pack data pool