Upgrading server dependancies (#6431)

vendor/github.com/go-sql-driver/mysql/.travis/docker.cnf

@@ -0,0 +1,5 @@
+[client]
+user = gotest
+password = secret
+host = 127.0.0.1
+port = 3307

vendor/github.com/go-sql-driver/mysql/.travis/wait_mysql.sh

@@ -0,0 +1,8 @@
+#!/bin/sh
+while :
+do
+    sleep 3
+    if mysql -e 'select version()'; then
+        break
+    fi
+done