Provide atop and screen to all nodes

Provide installation and configuration
of atop and screen to all nodes

By default, make snapshot of system status each 20 seconds and keep
them for 7 days locally for every node.
It shows the occupation of the most critical hardware resources (from
a performance point of view) on system level, i.e. cpu, memory, disk
and network. Also:
* Keep recorded data in binary format in /var/log/atop directory for
  7 days and delete an older ones by a logrotate job.
* Additionally consumes maximum of 1.5G-2G of disk space for
  each node.
* Add recorded atop data for the current day only (created as a symlink)
  to the diagnostic logs snapshot as well (bug/1389155).

DocImpact
Closes-Bug: 1385122

Signed-off-by: Sergii Golovatiuk <sgolovatiuk@mirantis.com>
Change-Id: Ib46ad049bc523f120da1ddaf20fb63a7b135153c
Merge "Provide atop and screen to all nodes"