This PR introduces the first part of disk encryption support. New config section `systemDiskEncryption` was added into MachineConfig. For now it contains only Ephemeral partition encryption. Encryption itself supports two kinds of keys for now: - node id deterministic key. - static key which is hardcoded in the config and mainly used for test purposes. Talosctl cluster create can now be told to encrypt ephemeral partition by using `--encrypt-ephemeral` flag. Additionally: - updated pkgs library version. - changed Dockefile to copy cryptsetup deps from pkgs. Signed-off-by: Artem Chernyshev <artem.0xD2@gmail.com>