[Tarantool-patches] [test-run] Add options for upgrade testing

[Sergey Bronnikov]

Hi, Alexander!

I just want to ask you to take a look on updated patch again.
I have fixed code according to your comments and also
fixed a bug when path for snapshot copying was invalid.

Branch: https://github.com/tarantool/test-run/tree/ligurio/gh-4801-add-snapshot-option
CI: https://travis-ci.com/github/tarantool/test-run/builds/199375391

On 14:29 Wed 10 Jun , Sergey Bronnikov wrote:
> Hi,