overlay.d/05rhcos: Add dracut module to install vendored gdisk

See: coreos/ignition#1926
See: https://issues.redhat.com/browse/RHEL-56080
See: coreos/fedora-coreos-config#3015

Author: travier

overlay.d/05rhcos/usr/lib/dracut/modules.d/50ignition-sgdisk/module-setup.sh

@@ -0,0 +1,15 @@
+#!/bin/bash
+
+check() {
+    return 0
+}
+
+depends() {
+    echo ignition
+}
+
+install() {
+    # Installed vendored gdisk binary in the initramfs for Ignition
+    # See: https://issues.redhat.com/browse/RHEL-56080
+    inst /usr/libexec/ignition-sgdisk /usr/sbin/sgdisk
+}