Initial commit to ipxe-build repo

- compile iPXE with HTTPS support

Change-Id: I8ddf1d91ea34d00941108d6c4647a4ff94a75700
diff --git a/chain.ipxe b/chain.ipxe
new file mode 100644
index 0000000..fa49bb3
--- /dev/null
+++ b/chain.ipxe
@@ -0,0 +1,9 @@
+#!ipxe
+# SPDX-FileCopyrightText: © 2020 Open Networking Foundation <support@opennetworking.org>
+# SPDX-License-Identifier: Apache-2.0
+
+# autoconfigure self via DHCP
+dhcp
+
+# chainload netboot.ipxe, or drop to shell if it doesn't exist
+chain http://boot.tucson.onlab.us/boot.ipxe || shell