spark.jobserver.auth
Apache Shiro based authenticator for the Spark JobServer, the authenticator realm must be specified in the ini file for Shiro
default authenticator that accepts all users based on example provided by Mario Camou at http://www.tecnoguru.com/blog/2014/07/07/implementing-http-basic-authentication-with-spray/
do not call directly - only for unit testing!
Apache Shiro based authenticator for the Spark JobServer, the authenticator realm must be specified in the ini file for Shiro