[openssl-gost] [gost-engine/engine] e8747a: Switch to alpha2

[Dmitry Belyavskiy <noreply@github.com>]

  Branch: refs/heads/master
  Home:   https://github.com/gost-engine/engine
  Commit: e8747a5b9f045f63501d77fbd760154753c60966
      https://github.com/gost-engine/engine/commit/e8747a5b9f045f63501d77fbd760154753c60966
  Author: Dmitry Belyavskiy <beldmit@gmail.com>
  Date:   2020-05-18 (Mon, 18 May 2020)

  Changed paths:
    M .travis.yml

  Log Message:
  -----------
  Switch to alpha2