Add packer scripts to build mosk image

Automate steps with building image for virtual mosk deployments.

Related-Prod: PRODX-35395
Change-Id: Ideff56310d153ceb034899f2efd8995f930e65d9
diff --git a/mosk-images/config-drive/meta-data b/mosk-images/config-drive/meta-data
new file mode 100644
index 0000000..d819e91
--- /dev/null
+++ b/mosk-images/config-drive/meta-data
@@ -0,0 +1 @@
+hostname: mosk