Floppy support (#1334)

Add support for attaching 1 or 2 floppy drives to the VM using "vfd"
image files.

spec/support/environment_helper.rb

@@ -20,7 +20,7 @@ class EnvironmentHelper
     1024
   end
 
-  %w(cpus cpu_mode loader nvram boot_order machine_type disk_bus disk_device nested volume_cache kernel cmd_line initrd graphics_type graphics_autoport graphics_port graphics_ip graphics_passwd video_type video_vram keymap storage_pool_name disks cdroms driver).each do |name|
+  %w(cpus cpu_mode loader nvram boot_order machine_type disk_bus disk_device nested volume_cache kernel cmd_line initrd graphics_type graphics_autoport graphics_port graphics_ip graphics_passwd video_type video_vram keymap storage_pool_name disks cdroms floppies driver).each do |name|
     define_method(name.to_sym) do
       nil
     end

spec/unit/config_spec.rb

@@ -873,6 +873,26 @@ describe VagrantPlugins::ProviderLibvirt::Config do
         end
       end
     end
+
+    context 'with cdroms and floppies' do
+      it 'should be invalid if too many cdroms' do
+        subject.storage :file, :device => :cdrom
+        subject.storage :file, :device => :cdrom
+        subject.storage :file, :device => :cdrom
+        subject.storage :file, :device => :cdrom
+        subject.storage :file, :device => :cdrom
+
+        expect{ subject.finalize! }.to raise_error('Only four cdroms may be attached at a time')
+      end
+
+      it 'sould be invalid if too many floppies' do
+        subject.storage :file, :device => :floppy
+        subject.storage :file, :device => :floppy
+        subject.storage :file, :device => :floppy
+
+        expect{ subject.finalize! }.to raise_error('Only two floppies may be attached at a time')
+      end
+    end
   end
 
   describe '#merge' do
@@ -925,6 +945,28 @@ describe VagrantPlugins::ProviderLibvirt::Config do
           end
         end
       end
+
+      context 'with floppies only' do
+        context 'assigned specific devs' do
+          it 'should merge floppies with specific devices' do
+            one.storage(:file, device: :floppy, dev: 'fda')
+            two.storage(:file, device: :floppy, dev: 'fdb')
+            subject.finalize!
+            expect(subject.floppies).to include(include(dev: 'fda'),
+                                                include(dev: 'fdb'))
+          end
+        end
+
+        context 'without devs given' do
+          it 'should merge floppies with different devs assigned automatically' do
+            one.storage(:file, device: :floppy)
+            two.storage(:file, device: :floppy)
+            subject.finalize!
+            expect(subject.floppies).to include(include(dev: 'fda'),
+                                                include(dev: 'fdb'))
+          end
+        end
+      end
     end
 
     context 'clock_timers' do

spec/unit/templates/domain_all_settings.xml

@@ -85,6 +85,10 @@
       <target dev='hdb' bus='ide'/>
       <readonly/>
     </disk>
+    <disk type='file' device='floppy'>
+      <source file=''/>
+      <target dev='fda' bus='fdc'/>
+    </disk>
     <serial type='file'>
       <source path='/var/log/vm_consoles/machine.log'/>
       <target port='0'/>

spec/unit/templates/domain_spec.rb

@@ -81,6 +81,7 @@ describe 'templates/domain' do
       domain.disk_driver(:cache => 'unsafe', :io => 'threads', :copy_on_read => 'on', :discard => 'unmap', :detect_zeroes => 'on')
       domain.storage(:file, path: 'test-disk1.qcow2')
       domain.storage(:file, path: 'test-disk2.qcow2', io: 'threads', copy_on_read: 'on', discard: 'unmap', detect_zeroes: 'on')
+      domain.storage(:file, device: :floppy)
       domain.storage(:file, device: :cdrom)
       domain.storage(:file, device: :cdrom)
       domain.channel(type: 'unix',