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/postgres.yml

@@ -20,7 +20,7 @@ services:
 
   onlyoffice-postgresql:
     container_name: onlyoffice-postgresql
-    image: postgres:9.5
+    image: postgres:${POSTGRES_VERSION:-9.5}
     environment:
       - POSTGRES_DB=${POSTGRES_DB:-onlyoffice}
       - POSTGRES_USER=${POSTGRES_USER:-onlyoffice}