Add swift-get-nodes, swift-recon and swift-recon-cron

These tools are used used to monitor and diagnose issues with swift:
  o swift-get-nodes is used to find out the location where a
    particular account, container or object item is located within
    the swift cluster
  o swift-recon is used to retrieve various metrics and telemetry
    information about a cluster that has been collected by the swift-recon
    middleware
  o swift-recon-cron is configured as a cronjob and is used to
    track a servers async pending

This commit includes code to create the cronjob /etc/cron.d/swift-recon

Change-Id: Ia83c42c1a028508534c7ed774a27e30b498fc811
Merge "Add swift-get-nodes, swift-recon and swift-recon-cron"