fixes #12920 - allowing os parameters to be set via API

Refs #12911 - Fixing colon method calls

fixes #13430 - add missing actions to virt power manager

When rebooting a vm via power manager, this fails:

| TypeError: nil is not a symbol | /Users/f0218175/foremandev/foreman/app/services/power_manager/virt.rb:25:in
`block (2 levels) in <class:Virt>'...

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 #13379 - Clear host.last_report when switching to build mode

Use case:

When a server with a Puppet client is rebuilt, foreman cleans the
reports but not the "last report" field.

When you switch a host from a Puppet-enablet hostgroup to a hostgroup...

fixes #13236 - apply power operations to several hosts at once

This commit adds the ability to select multiple hosts and apply power operations
(reboot, shutdown, boot) to them.

Fixes #13115 - Adds locations and organizations in smart_proxies#index

fixes #13355 - facet test tables get created when tests run

moving the require to the test helper ensures that the code gets
evaluated before Spork.prefork, thus, the tables get created.

Fixes #13354 - Correctly show certificates even if some are pending

Fixes #13107 - compute attributes has indifferent access again

During upgrade to Rails 4.1, our host#create code no longer sends attributes
into the ActiveRecord create/new initializers with indifferent access. One
of these attributes, `compute_attributes` then does not work breaking...