regex filter ignores username

• Define service:
  Read Connection Router 2]
  type=service
  router=readconnroute
  router_options=slave
  servers=server1,server2,server3,server4
  user=skysql
  passwd=skysql
  filters=regex2

• connect with any user except 'baduser' and try to send simple query to this service (e.g SELECT 123)

expected result: filter is not involved because filter is defined only for 'baduser'
actual result: filter is involved, query is changed by filter