Add support for MultiStrOpt

This replaces the provider implementation of watcher_config type so
that MultiStrOpt, which is used by several options like
 - oslo_messaging_notifications/driver
 - oslo_policy/policy_dirs
are handled correctly.

Change-Id: I3e92b0123cf18803cc8abfebcbe48b51812a8c27

lib/puppet/provider/watcher_config/openstackconfig.rb

@@ -1,6 +1,6 @@
 Puppet::Type.type(:watcher_config).provide(
-  :ini_setting,
-  :parent => Puppet::Type.type(:openstack_config).provider(:ini_setting)
+  :openstackconfig,
+  :parent => Puppet::Type.type(:openstack_config).provider(:ruby)
 ) do
 
   def self.file_path

lib/puppet/type/watcher_config.rb

@@ -7,14 +7,22 @@ Puppet::Type.newtype(:watcher_config) do
     newvalues(/\S+\/\S+/)
   end
 
-  newproperty(:value) do
+  newproperty(:value, :array_matching => :all) do
     desc 'The value of the setting to be defined.'
+    def insync?(is)
+      return true if @should.empty?
+      return false unless is.is_a? Array
+      return false unless is.length == @should.length
+      return (
+        is & @should == is or
+        is & @should.map(&:to_s) == is
+      )
+    end
     munge do |value|
       value = value.to_s.strip
       value.capitalize! if value =~ /^(true|false)$/i
       value
     end
-    newvalues(/^[\S ]*$/)
 
     def is_to_s( currentvalue )
       if resource.secret?

spec/unit/provider/watcher_config/openstackconfig_spec.rb

@@ -1,5 +1,5 @@
 require 'spec_helper'
-provider_class = Puppet::Type.type(:watcher_config).provider(:ini_setting)
+provider_class = Puppet::Type.type(:watcher_config).provider(:openstackconfig)
 describe provider_class do
 
   it 'should default to the default setting when no other one is specified' do

spec/unit/type/watcher_config_spec.rb

@@ -30,12 +30,12 @@ describe 'Puppet::Type.type(:watcher_config)' do
 
   it 'should accept a valid value' do
     @watcher_config[:value] = 'bar'
-    expect(@watcher_config[:value]).to eq('bar')
+    expect(@watcher_config[:value]).to eq(['bar'])
   end
 
   it 'should not accept a value with whitespace' do
     @watcher_config[:value] = 'b ar'
-    expect(@watcher_config[:value]).to eq('b ar')
+    expect(@watcher_config[:value]).to eq(['b ar'])
   end
 
   it 'should accept valid ensure values' do