This commit corrects the version of `puppetlabs/stdlib` in the fixtures
file. This was correct but a force push of this branch is now trying to
change it back to the old value. This commit ensures that the desired
version is used.

* Continuation of https://github.com/trlinkin/puppet-nsswitch/pull/34 by
  @rcalixte
* Added support for EL8
* Added a `file_path` parameter to allow users to move the nsswitch.conf
  target
* Updated/fixed documentation for `puppet strings`
* Generated a REFERENCE.md and linked it to the README.md
* Updated the minimum required version of `puppetlabs-stdlib` for
  support for the `Stdlib::Unixpath` data type
* Updated the spec tests

Update fixtures to 6.x stdlib

This commit updates the `.fixtures.yml` to use the most recent version of
puppetlabs/stdlib in CI testing. This change will allow the module to be
verified against the 6.x generation of puppetlabs/stdlib.

Update Metadata to claim support with puppetlabs/stdlib 6.x.

Add Puppet 6 Support

* Added puppet 6 tests
* Corrected ruby version for LTS Puppet 5
* Corrected gitlab-ci.yml test for Puppet 5

This commit applies readability improvements to allow RuboCop checks to
pass cleanly.

This commit adds stated platform support for platforms such as Fedora,
SLES, and more. Not all of these claims have been fully verified. If
you're reading this and running one of these platforms, please let me
know how it goes.

This commit further cleans up the stated support for platforms in this
module. Specifically, it not directly defines the supported versions of
Solaris.

This commit adds support for LinuxMint 17.2 release. The default section
was provided via an issue open of GitHub. The submitter, @HendryLeo,
only mentioned 17.2 in the issue and thus this module will only commit
to support that version. It is important to know that at this time, I
have not directly tested this on a LinuxMint 17.2 system.

This commit adds the specific versions of FreeBSD supported to the
README and metadata.json file.

FreeBSD support, Puppet 4

This commit includes the changes as a result of the `pdk convert`
command. This was done with the 1.4.x version of PDK, and will likely
need to be done again in the future for 1.5.x.

Puppet 5 related changes

Rake task is also used in automated testing to ensure that documentation
can be created.

* Test against latest versions of Puppet v4 and v5 with the ruby shipped
in the AIO
* Use puppet-lint and community plugins
* Add validation
* Fix issues with metadata

* Consolidate licensing info in LICENSE.md
* Move changelog from README.md to CHANGELOG.md
* Add @summary tags to manifests

Strings documentation

Without this commit, this module will attempt to use "root" as the name
of the user and group to own the configuration to. This is not wise
given the range of systems this module will eventually come to support.
Using a numberic UID/GID for ownership is far safer since the super user
is always "0" regardless of human readable name.

This commit uses the UID/GID of "0" for the ownership of the
`nsswitch.conf` file.

This commit removes all versions of Ruby from the TravisCI test matrix
except 2.1.0. This is due to the fact that Puppet, Inc. only tests Puppet 4.x
against Ruby 2.1.x internally. Newer versions of Puppet have also started
throwing deprecation warnings that have been failing tests needlessly.

This commit adds a default "sudoers" database of "undef" for Solaris
systems.

During a recent addition, it appears the the default value for the
"shadow" parameter for Solaris (which is undef) was removed. This was
causing the module to fail when compiling for Solaris agents.

A value of "undef" has been added since "shadow" is not a valid database
for Solaris.

This commit corrects a typo in the unit tests causing the module to fail
tests. The fact "operatingsystemmajrelease" had a typo that resulted in
it not being set during testing that led to a false positive on
failures.

This commit replaces an instance of "::" fact access with `$facts`
access. This should ensure that all fact access in this module is based
on the new syntax for fact access.

This commit removes any test references to Puppet 3, as well as versions
of Ruby below 2.0.0. This commit also ensure that the latest Puppet
release at time of change (4.10.1) is being tested explicitly.

This commit removes the deprecated "pe" dependency from the module
metadfata. This commit also removes the dependency on
"puppetlabs/stdlib" as it is no longer needed in Puppet 4 thanks to data
types.