internal: Fix issue with premature disk fulls by btrfs

btrfs runs out of space even when the data stored is not even half of the
available space. This is due to it needing re-balance operation. It may not be
possible to run the re-balance during a heavy operation such as installing a
package with lot of dependencies (freedombox). Adding an additional disk is a
good work around for that. The additional device will be removed during cleanup
and filesystem will be re-balanced.

Signed-off-by: Sunil Mohan Adapa <sunil@medhas.org>
Reviewed-by: Joseph Nuthalapati <njoseph@thoughtworks.com>
2 jobs for master in 6 minutes and 22 seconds (queued for 3 seconds)
Status Job ID Name Coverage
  Test
passed #200544
run-unit-tests

00:03:07

 
  Package
passed #200545
build-debian-package

00:03:15