sys-kernel/coreos-kernel: ensure the final systemd is installed

The systemd package from setup_board does not have USE=cryptsetup,
but it gets installed before build_packages, which satisfies the
build-time dependency from the kernel.  The initramfs should have
the cryptsetup files, so explicitly depend on it to order building
the kernel after the final systemd package.

sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-kernel/coreos-kernel-4.11.2-r1.ebuild

@@ -19,7 +19,7 @@ DEPEND="${RDEPEND}
 	sys-apps/less
 	sys-apps/sed
 	sys-apps/shadow
-	sys-apps/systemd
+	sys-apps/systemd[cryptsetup]
 	sys-apps/seismograph
 	sys-apps/util-linux
 	sys-fs/btrfs-progs