build: support MySQL 8 series

Author: ruiquelhas

.travis.yml

@@ -29,6 +29,8 @@ matrix:
       env: "DOCKER_MYSQL_TYPE=mysql DOCKER_MYSQL_VERSION=5.5"
     - node_js: *lts
       env: "DOCKER_MYSQL_TYPE=mysql DOCKER_MYSQL_VERSION=5.6"
+    - node_js: *lts
+      env: "DOCKER_MYSQL_TYPE=mysql DOCKER_MYSQL_VERSION=8.0"
     - node_js: *lts
       env: "DOCKER_MYSQL_TYPE=mariadb DOCKER_MYSQL_VERSION=5.5"
     - node_js: *lts