Add more travis tests (#289)

* Add version variable for travis tests

* Fix typo

* Fix activemq variable

* Add travis tests

* Remove mysql latest

* Fixes & refactoring

* Add more travis tests

* Remove mysql 8 test

* Remove mysql 8 test [2]

* Add mysql 8 comment

* Fix mysql 8 auth plugin

Co-authored-by: Alexey Golubev <alexey.golubev@onlyoffice.com>

tests/rabbitmq.yml

@@ -17,7 +17,7 @@ services:
 
   onlyoffice-rabbitmq:
     container_name: onlyoffice-rabbitmq
-    image: rabbitmq
+    image: rabbitmq:${RABBITMQ_VERSION:-latest}
     restart: always
     networks:
      - onlyoffice