Add Gemfile and puppet 4 checks

In anticipation of puppet 4, start trying to deal with puppet 4 things
that can be helpfully predicted by puppet lint plugins.

Change-Id: I498052d2db57e571f0f91cd2c2e43e39c693331f
Signed-off-by: Paul Belanger <pabelanger@redhat.com>

.gitignore

@@ -0,0 +1,2 @@
+Gemfile.lock
+.bundled_gems/

Gemfile

@@ -0,0 +1,30 @@
+source 'https://rubygems.org'
+
+group :development, :test do
+  gem 'puppetlabs_spec_helper', :require => false
+
+  gem 'metadata-json-lint'
+  # This is nice and all, but let's not worry about it until we've actually
+  # got puppet 4.x sorted
+  # gem 'puppet-lint-param-docs'
+  gem 'puppet-lint-absolute_classname-check'
+  gem 'puppet-lint-absolute_template_path'
+  gem 'puppet-lint-trailing_newline-check'
+
+  # Puppet 4.x related lint checks
+  gem 'puppet-lint-unquoted_string-check'
+  gem 'puppet-lint-empty_string-check'
+  gem 'puppet-lint-leading_zero-check'
+  gem 'puppet-lint-variable_contains_upcase'
+  gem 'puppet-lint-spaceship_operator_without_tag-check'
+  gem 'puppet-lint-undef_in_function-check'
+
+  if puppetversion = ENV['PUPPET_GEM_VERSION']
+    gem 'puppet', puppetversion, :require => false
+  else
+    gem 'puppet', '~> 3.0', :require => false
+  end
+
+end
+
+# vim:ft=ruby

manifests/init.pp

@@ -5,7 +5,7 @@ class pip (
   $trusted_hosts = [],
   $manage_pip_conf = false,
 ) {
-  include pip::params
+  include ::pip::params
   validate_array($trusted_hosts)
 
   package { $::pip::params::python_devel_package:

manifests/python3.pp

@@ -1,7 +1,7 @@
 # Class: pip
 #
 class pip::python3 {
-  include pip::params
+  include ::pip::params
 
   package { $::pip::params::python3_devel_package:
     ensure => present,