fixes #2693 - don't cause handle_ca error when no Puppet CA associated with host

fixes #1770 - Refactored rdeckfacts definition to use facts_hash

fixes #2747 - scoped search lambda takes one argument

fixes #1963 - prevent host creation when facts are uploaded via new setting

Fixes #2644 - Refactor Host find_by_name to use several ways to find a
host, and refactor my_hosts scope to Host::Base, allowing us to remove
unnecessary permissions check from find_by_name

fixes #1938 Foreman shouldn't use the FQDN fact to identify the node when facts are uploaded

Fixes #2632 - extract strings from validation errors

fixes #2549, fixes #2544 - new host organization and location should default to current context if it exists

fixes #2509, fixes #2507: few issues around Host::Base#merge_facts and fact names

fixes #2130 - normalize_hostname appends domainname to fqdn

When the trailing part of $fqdn doesn't match $domain, the normalize_hostname
function would append $domain onto the end of $fqdn, saving the host as
$fqdn.$domain (Example: hostname.domain1.com.domain2.com)....