Add KVM Guest role

Only installs qemu-guest-agent for now, for improving live VM backups.

roles/kvm_guest.rb

@@ -0,0 +1,5 @@
+name "kvm_guest"
+
+run_list %w(
+  kosmos_kvm::guest
+)

site-cookbooks/kosmos_kvm/recipes/guest.rb

@@ -0,0 +1,10 @@
+#
+# Cookbook:: kosmos_kvm
+# Recipe:: guest
+#
+
+package %w(qemu-guest-agent)
+
+service "qemu-guest-agent" do
+  action [:start]
+end