The saslpasswd2 is used to create users for the qdrouterd server. The
qdr_user provider needs to ensure permissions are correctly set for
the qdrouterd service to access the user data base during operation
(qdrouterd.sasldb).
Closes-Bug: #1707662
Change-Id: I60f2b4e1f11371098cfa29102fa12158b7b4acab