Percona started signing packages with a new public GPG key, without
providing it via HTTPS. Ship the PERCONA-PACKAGING-KEY extracted from
the percona-release package.
https://jira.percona.com/browse/PT-1685
monasca-grafana broken by 'rake' missing when trying to install the
'fpm' gem.
Co-Authored-By: Mark Goddard <mark@stackhpc.com>
Change-Id: Ica9867448dc20864f2fd4614a295a23a4a625af4
Closes-Bug: #1813906
Closes-Bug: #1813927