Prevent network interface logging w/ ovs agent

Openvswitch will create many network interfaces, especially when
supporting a nova compute node. We don't want any bugs in the underyling
OS tools to result in an explosion of network interface specific logs,
as we have seen that this can overwhelm upstart. This is mostly to be
defensive against future problems.

Change-Id: Id8310c5f24ea596ed2443bcb927a07b005980981
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
Fix /var/lib/mysql selinux labeling

/var/lib/mysql is currently set to var_lib_t and should be
mysqld_db_t. restorecon will fix the file context.

Change-Id: Idf613fc0b9e1d218061057c0dad29929aded38bd
Merge "Add swift-get-nodes, swift-recon and swift-recon-cron"
Merge "Prevent network interface logging w/ ovs agent"