EnforcementAction: Make it possible to specify a mode

Signed-off-by: Bernhard Walle <bernhard.walle@ncp-e.com>
AccessrequestDel: Make it possible to specify a hostname

If a hostname is specified, the 'ar-dev' CLI tool is called.

Signed-off-by: Bernhard Walle <bernhard.walle@ncp-e.com>
simu: ncpvpn: Delete everything we publish

Signed-off-by: Bernhard Walle <bernhard.walle@ncp-e.com>