Investigate getting sensu_gem working on windows

[jeffmccune]

This task came up in the discussion of #699 (review)

Moving it here for prioritization and decision. The major issues with windows brought up in #646 have been address in #699 so it's unclear if getting sensu_gem working on windows is necessary or not.

[jeffmccune]

Plan to grab this one on Tuesday.

[jeffmccune]

Closing this issue, sensu_gem works fine with vagrant up win2012r2-client. The sensu_gem provider uses the fully qualified path to sensu's embedded gem command, which is robust. Here's what I did to test the behavior:

diff --git a/tests/sensu-client-windows.pp b/tests/sensu-client-windows.pp
index d7b4441..41ac2d8 100644
--- a/tests/sensu-client-windows.pp
+++ b/tests/sensu-client-windows.pp
@@ -1,9 +1,17 @@
 # Note: Check http://repositories.sensuapp.org/msi/ for the latest version.
-class { '::sensu':
-  version           => '0.29.0-11',
-  rabbitmq_password => 'correct-horse-battery-staple',
-  rabbitmq_host     => '192.168.56.10',
-  rabbitmq_vhost    => '/sensu',
-  subscriptions     => 'all',
-  client_address    => $facts['networking']['ip'],
+node default {
+  class { '::sensu':
+    version           => '0.29.0-11',
+    rabbitmq_password => 'correct-horse-battery-staple',
+    rabbitmq_host     => '192.168.56.10',
+    rabbitmq_vhost    => '/sensu',
+    subscriptions     => 'all',
+    client_address    => $facts['networking']['ip'],
+  }
+  # (#700) Install a plugin using sensu_gem package provider on windows.
+  sensu::plugin { 'sensu-plugins-windows':
+    type         => 'package',
+    pkg_version  => 'installed',
+    pkg_provider => 'sensu_gem',
+  }
 }

Results:

==> win2012r2-client: Notice: Scope(Class[Sensu::Package]): Managing a local windows user is not implemented on windows
==> win2012r2-client: Notice: Compiled catalog for win2012r2-client.main.jeffmccune.net in environment production in 1.08 seconds
==> win2012r2-client: Info: Applying configuration version '1500407356'
==> win2012r2-client: Notice: /Stage[main]/Main/Node[default]/Sensu::Plugin[sensu-plugins-windows]/Package[sensu-plugins-windows]/ensure: created
==> win2012r2-client: Notice: Applied catalog in 7.89 seconds