initramfs-full: Add fips

Part of enabling FIPS support by default.
See also https://gitlab.com/fedora/bootc/examples/-/merge_requests/49

tier-1/initramfs-full.yaml

@@ -4,5 +4,5 @@ postprocess:
     #!/usr/bin/env bash
     mkdir -p /usr/lib/dracut/dracut.conf.d
     cat > /usr/lib/dracut/dracut.conf.d/30-bootc-tier-1.conf << 'EOF'
-    dracutmodules+=" lvm crypt "
+    dracutmodules+=" lvm crypt fips "
     EOF