fixes #5246 - remove second host/class lookup impl so config groups are included in ENC output

(cherry picked from commit 46b3d8f1f5dff70b961266232f0041beabea8e0d)

fixes #5105 - remove Setting['remove_classes_not_in_environment']

fixes #3214 - set taxonomy for hosts created via Puppet from facts or a default setting

fixes #3725, #4167 - root password validations, remove default password

Fixes #3569, #3210 - Use port from foreman_url for templates

fixes #3364 Add option to disable automatc host creation when a report is received

fixes #2975 added setting for using the shortname instead of FQDN for new virtual machines

fixes #2260 Allow ERB in ENC global / class parameters

Adds code to parse the global & class parameters, and adds a setting (default true)
to disable this if needed. Also has some tests.

fixes #1745 - make puppetmaster hostname/domain stripping behaviour configurable

Fixes #2576 - Add optional update of Host.ip from built request

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

fixes #2660 - settings, improve tests and fixes

- added string settings type
- fixed tests previously commented out due to CI failures
- more tests for core settings functionality
- parsing of string values enhanced and extracted to a separate method
- setting value to nil when it equals default is back...

fixes #2539 - added API puppetrun access permission and test

fixes #2407 - Add STI to settings model

Also adds some tests for rendering new/missing STI models, and
refactors the old default_settings loader into the new sub-models.

fixes #2417 - SSO abstractioning

Apache and Signo SSO reworked to a new general SSO concept.

You can use SSO service that comes with Katello for loggin in. It's
based on OpenID protocol with slightly customized provider.

fixes #2247 Provides an option to disable the use of gravatara

A new setting is added, use_gravatar. It defaults to true. If it is set to false, then the gravatar
call out is not used and only the default user icon is used.

fixes #2153 - add trusted_puppetmaster_hosts setting to permit puppetmaster access

Connections to fact + report upload and externalNodes will be permitted from
any host listed in the trusted_puppetmaster_hosts setting, bypassing the
requirement for a registered smart proxy....

fixes #2124 - only include classes from the host current environment.

This patch introduce a new setting, which decide how would foreman
address a mismatch between host and hostgruop environments.

for example, when puppet classes (directly or indirectly via hostgroups) that do not...

fixes #2151 - use DN environment variable instead of CN

nginx is unable to pass bits of the X.509 subject, only the entire DN, so
support that as a lowest common denominator.

fixes #2121, #2069 - restrict importers and ENC to puppetmasters and users

CVE-2013-0171: report and fact importers parse YAML directly from the remote
host without authentication. Untrusted YAML can instantiate objects and be
used to exploit Foreman.

CVE-2013-0174: external nodes (ENC) output is available to any source and...

Use tokens for discovery of host identity during installation

- fixes #1069
- fixes #1720
- refs #969

fixes #832 - adds parameterized class support

Credits:
This patch is based on the original work of Olivier Favre
<olivier@yakaz.com> many many thanks!

• import class parameters, and try to understand their types
• support a complex matrix of environments, puppet classes and their...

fixes #1820 - Authenticate API calls via REMOTE_USER

This patch allows API requests authentication via REMOTE_USER
only if authorize_login_delegation and authorize_login_delegation_api
are enabled.

fixes #1799 moved REMOTE_ADDR verification to settings

fixes #1544 - Updating a host fails if you cannot reach the SOA nameservers

fixes #137 - Better support for non-hostname certnames

This patch introduce a new setting :use_uuid_for_certificates which
defaults to false.

users who wish to deploy their hosts using a random unique id, should
enable that setting, and use the certname directive in their puppet.conf...

refs #1530 - ensure enc_environment is in a fixture

fixes #1446 - expire idle web sessions

wrong setting category - refs #636

fixes #685 - records per page should be configurable

This patch adds a new setting how many records should be per page.

note that since the code is in the ActiveRecord::Base class, and that
its in lib (e.g. loaded once) you would need to restart foreman everytime you change this value....

fixes #1043 - make autosign optional

fixes #322 Ability to add custom variables and multiple values resovled
in a dynamic Hierarchally order

This commits introduces the ability to define variables per puppet
class.

additionally, each class can have multiple values, depends on the host
which is requesting that variable....

splitted setting default data from the migration
this allows to add new data and modify its defaults
improved settings UI a bit more
refs #100

fixes #100 - Setting is now a ActiveRecord object

This allows users to manage foreman settings via the UI.

the UI is a bit ugly, but works :)