Move debian dir to the master

Add debian dir to combine building workflow

Change-Id: I1cf3361a17a3669c95da9edfe7c8412521b2b6c4
PROD: https://mirantis.jira.com/browse/PROD-20910
diff --git a/debian/salt-formula-nova.postinst b/debian/salt-formula-nova.postinst
new file mode 100644
index 0000000..3934013
--- /dev/null
+++ b/debian/salt-formula-nova.postinst
@@ -0,0 +1,10 @@
+#!/bin/sh
+
+set -e
+
+dpkg-maintscript-helper symlink_to_dir \
+        /usr/share/salt-formulas/env/nova/files/pike /usr/share/salt-formulas/env/nova/files/ocata salt-formula-nova -- "$@"
+
+#DEBHELPER#
+
+exit 0