Add qemu CSP for Coordinator

Signed-off-by: Daniel Weiße <dw@edgeless.systems>

coordinator/cloudprovider/qemu/cloudnodemanager.go

@@ -0,0 +1,27 @@
+package qemu
+
+// CloudNodeManager holds the QEMU cloud-node-manager configuration.
+type CloudNodeManager struct{}
+
+// Image returns the container image used to provide cloud-node-manager for the cloud-provider.
+// Not used on QEMU.
+func (c *CloudNodeManager) Image() string {
+	return ""
+}
+
+// Path returns the path used by cloud-node-manager executable within the container image.
+// Not used on QEMU.
+func (c *CloudNodeManager) Path() string {
+	return ""
+}
+
+// ExtraArgs returns a list of arguments to append to the cloud-node-manager command.
+// Not used on QEMU.
+func (c *CloudNodeManager) ExtraArgs() []string {
+	return []string{}
+}
+
+// Supported is used to determine if cloud node manager is implemented for this cloud provider.
+func (c *CloudNodeManager) Supported() bool {
+	return false
+}