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. Also fix lint
errors caught by the puppet-lint-empty_string-check gem:

- releasestatus base class: replacing empty string defaults with undef
- releasestatus::site class: replacing empty string defaults with
  reasonable default values inspired by system-config's usage

Change-Id: I7ce45ac86da0d7dcdb90deb292973c8cdde0421a

.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

@@ -15,9 +15,9 @@
 # Class: releasestatus
 #
 class releasestatus (
-  $releasestatus_prvkey_contents = '',
-  $releasestatus_pubkey_contents = '',
-  $releasestatus_gerrit_ssh_key = '',
+  $releasestatus_prvkey_contents = undef,
+  $releasestatus_pubkey_contents = undef,
+  $releasestatus_gerrit_ssh_key = undef,
 ) {
   if ! defined(Package['python-launchpadlib']) {
     package { 'python-launchpadlib':
@@ -66,7 +66,7 @@ class releasestatus (
     require => File['/var/lib/releasestatus'],
   }
 
-  if $releasestatus_prvkey_contents != '' {
+  if $releasestatus_prvkey_contents != undef {
     file { '/var/lib/releasestatus/.ssh/id_rsa':
       owner   => 'releasestatus',
       group   => 'releasestatus',
@@ -77,7 +77,7 @@ class releasestatus (
     }
   }
 
-  if $releasestatus_pubkey_contents != '' {
+  if $releasestatus_pubkey_contents != undef {
     file { '/var/lib/releasestatus/.ssh/id_rsa.pub':
       owner   => 'releasestatus',
       group   => 'releasestatus',
@@ -88,7 +88,7 @@ class releasestatus (
     }
   }
 
-  if $releasestatus_gerrit_ssh_key != '' {
+  if $releasestatus_gerrit_ssh_key != undef {
     file { '/var/lib/releasestatus/.ssh/known_hosts':
       owner   => 'releasestatus',
       group   => 'releasestatus',

manifests/site.pp

@@ -15,8 +15,8 @@
 # == Define: releasestatus
 #
 define releasestatus::site(
-  $configfile = '',
-  $httproot = '',
+  $configfile = 'integrated.yaml',
+  $httproot = '/srv/static/release',
 ) {
 
   file { "/var/lib/releasestatus/${configfile}":