Feature/poll smdpplus for install and download statuses

[la3lma]

We have experienced instabilities in the ES2+ callbacks. This is a patch that introduces a dropwizard task, intended to be triggered by a cronjob, that will poll the SM-DP+ via ES2+ to determine the state of the profiles that has been reserved for download, but have not yet been registered in the sim manager database as downloaded (as seen by the SM-DP+).