Reengineed the code. Generalized the package. Cloud configurators are modules.

debian-package/src/usr/lib/vpn-router/configure

@@ -0,0 +1,22 @@
+#!/usr/bin/python3
+"""Render configuration files and provision PKI from vpn-router.conf.
+
+Run directly to regenerate the configuration files without touching the
+running system. 'setup' calls the same code before applying the rest.
+"""
+
+import os
+import sys
+
+sys.path.insert(0, os.path.dirname(os.path.realpath(__file__)))
+
+import vpnrouter
+
+
+def main():
+    vpnrouter.configure()
+    return 0
+
+
+if __name__ == '__main__':
+    sys.exit(main())