Initial commit of PVC Bootstrap system

Adds the PVC Bootstrap system, which allows the automated deployment of
one or more PVC clusters.

bootstrap-daemon/pvcbootstrapd/lib/tftp.py

@@ -0,0 +1,45 @@
+#!/usr/bin/env python3
+
+# tftp.py - PVC Cluster Auto-bootstrap TFTP preparation libraries
+# Part of the Parallel Virtual Cluster (PVC) system
+#
+#    Copyright (C) 2018-2021 Joshua M. Boniface <joshua@boniface.me>
+#
+#    This program is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU General Public License as published by
+#    the Free Software Foundation, version 3.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU General Public License for more details.
+#
+#    You should have received a copy of the GNU General Public License
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+#
+###############################################################################
+
+import os.path
+import shutil
+
+
+def build_tftp_repository(config):
+    # Generate an installer config
+    build_cmd = f"{config['ansible_path']}/pvc-installer/buildpxe.sh -o {config['tftp_root_path']} -u {config['deploy_username']}"
+    print(f"Building TFTP contents via pvc-installer command: {build_cmd}")
+    os.system(build_cmd)
+
+
+def init_tftp(config):
+    """
+    Prepare a TFTP root
+    """
+    if not os.path.exists(config["tftp_root_path"]):
+        print("First run: building TFTP root and contents - this will take some time!")
+        os.makedirs(config["tftp_root_path"])
+        os.makedirs(config["tftp_host_path"])
+        shutil.copyfile(
+            f"{config['ansible_keyfile']}.pub", f"{config['tftp_root_path']}/keys.txt"
+        )
+
+        build_tftp_repository(config)