Add option for box_download_insecure to be passed to Vagrantfile

lib/kitchen/driver/vagrant.rb

@@ -43,6 +43,8 @@ class Vagrant < Kitchen::Driver::Base
 
       default_config :box_check_update, nil
 
+      default_config :box_download_insecure, nil
+
       default_config(:box_url) { |driver| driver.default_box_url }
 
       default_config :box_version, nil

spec/kitchen/driver/vagrant_spec.rb

@@ -200,6 +200,16 @@ def run_command(_cmd, options = {})
       expect(driver[:box_check_update]).to eq(true)
     end
 
+    it "sets :box_download_insecure to nil by default" do
+      expect(driver[:box_download_insecure]).to eq(nil)
+    end
+
+    it "sets :box_download_insecure to a custom value" do
+      config[:box_download_insecure] = true
+
+      expect(driver[:box_download_insecure]).to eq(true)
+    end
+
     it "sets :box_version to nil by default" do
       expect(driver[:box_version]).to eq(nil)
     end
@@ -967,6 +977,35 @@ def run_command(_cmd, options = {})
       expect(vagrantfile).to match(regexify(%{c.vm.box_check_update = "um"}))
     end
 
+    it "sets no vm.box_download_insecure if missing" do
+      config[:box_download_insecure] = nil
+      cmd
+
+      expect(vagrantfile).to_not match(
+        regexify(%{c.vm.box_download_insecure}, :partial)
+      )
+    end
+
+    it "sets vm.box_download_insecure to false
+          if :box_download_insecure is false" do
+
+      config[:box_download_insecure] = false
+      cmd
+
+      expect(
+        vagrantfile).to match(regexify(%{c.vm.box_download_insecure = "false"})
+      )
+    end
+
+    it "sets vm.box_download_insecure if :box_download_insecure is set" do
+      config[:box_download_insecure] = "um"
+      cmd
+
+      expect(
+        vagrantfile).to match(regexify(%{c.vm.box_download_insecure = "um"})
+      )
+    end
+
     it "sets no vm.communicator if missing" do
       config[:communicator] = nil
       cmd

templates/Vagrantfile.erb

@@ -18,6 +18,10 @@ Vagrant.configure("2") do |c|
   c.vm.box_check_update = "<%= config[:box_check_update] %>"
 <% end %>
 
+<% if !config[:box_download_insecure].nil? %>
+  c.vm.box_download_insecure = "<%= config[:box_download_insecure] %>"
+<% end %>
+
 <% if config[:vm_hostname] %>
   c.vm.hostname = "<%= config[:vm_hostname] %>"
 <% end %>