vmx: handle shared folders formatting

This patch adds support for generating vmx files with
shared folders enabled.

Update test suite accordingly.

tests/xml2vmxdata/xml2vmx-sharedfolder.vmx

@@ -0,0 +1,18 @@
+.encoding = "UTF-8"
+config.version = "8"
+virtualHW.version = "4"
+guestOS = "other"
+uuid.bios = "56 4d 9b ef ac d9 b4 e0-c8 f0 ae a8 b9 10 35 15"
+displayName = "sharedFolder"
+memsize = "4"
+numvcpus = "1"
+floppy0.present = "false"
+floppy1.present = "false"
+isolation.tools.hgfs.disable = "false"
+sharedFolder.maxNum = "1"
+sharedFolder0.present = "true"
+sharedFolder0.enabled = "true"
+sharedFolder0.readAccess = "true"
+sharedFolder0.writeAccess = "true"
+sharedFolder0.hostPath = "/path/to/shared"
+sharedFolder0.guestName = "shared"

tests/xml2vmxdata/xml2vmx-sharedfolder.xml

@@ -0,0 +1,14 @@
+<domain type='vmware'>
+  <name>sharedFolder</name>
+  <uuid>564d9bef-acd9-b4e0-c8f0-aea8b9103515</uuid>
+  <memory unit='KiB'>4096</memory>
+  <os>
+    <type>hvm</type>
+  </os>
+  <devices>
+    <filesystem type='mount'>
+      <source dir='/path/to/shared'/>
+      <target dir='shared'/>
+    </filesystem>
+  </devices>
+</domain>