Fixes #9425 - Remove the Default User role

The Default User role is not actually used anywhere, and causes
confusion with the Anonymous role. Removing it.

fixes #13938 - remove reports fixtures

Under Rails 4.2, the rendering of the config_reports#show page was
failing as the reports fixtures referenced hosts that didn't exist.
Presence of host_id is validated under normal circumstances.

Fixes #12718 - smart proxy log table

This patch adds a table with logs fetched from Smart Proxy /logs new API. It
returns latest N log entries from a simple memory buffer. The table supports
filtering by level, custom filtering and it introduces several overview...

fixes #12954 - config status is relevant if reports exist or via setting

For a host that has config management reports, but no Puppet proxy set,
consider the config status relevant. This helps in an environment with
reports but no proxy, but has the side effect of considering the status...

Fixes #10649 - Adds Test email button to user's mail preferences

When clicked, a test mail deliverd to the user's email, and if it
failed, error details will pop up.

fixes #4151 - enable reports STI

Permits subclassing of ReportImporter and Report to import and store
new types of reports associated to hosts.

fixes #12127 - verify x509 subject alternative names when authenticating a smart proxy

Fixes #11972 - ignore specific interfaces via settings

Fixes #11987 - Check exit code of deployment scripts

This commit fixes checking exit codes returned from provisioning templates, which were ignored
because of sending results through pipe to command tee. Also adds optional host deleting if deployment
fails because of non zero exit code. This can be configured by setting clean_up_failed_deployment...

Fixes #10106 - Make tests run in parallel

Run rake parallel:test to run tests in several processes. The gem will
auto split the tests in as many cores as you have available.

Keep in mind running tests in parallel could highlight race conditions
we would've missed otherwise, so some tests might to be fixed to ensure...