Comment 4 for bug 2056226

seen also on all the 3 nodes of solqa on one run. Moving to high as it seems more severe

pr 3 01:35:38 noma rackd[2724997]: Traceback (most recent call last):
Apr 3 01:35:38 noma rackd[2724997]: File "/usr/sbin/rackd", line 33, in <module>
Apr 3 01:35:38 noma rackd[2724997]: sys.exit(load_entry_point('maas==3.5.0rc5', 'console_scripts', 'rackd')())
Apr 3 01:35:38 noma rackd[2724997]: File "/usr/lib/python3/dist-packages/provisioningserver/server.py", line 95, in run
Apr 3 01:35:38 noma rackd[2724997]: runService("maas-rackd")
Apr 3 01:35:38 noma rackd[2724997]: File "/usr/lib/python3/dist-packages/provisioningserver/server.py", line 90, in runService
Apr 3 01:35:38 noma rackd[2724997]: UnixApplicationRunner(config).run()
Apr 3 01:35:38 noma rackd[2724997]: File "/usr/lib/python3/dist-packages/twisted/application/app.py", line 370, in run
Apr 3 01:35:38 noma rackd[2724997]: self.application = self.createOrGetApplication()
Apr 3 01:35:38 noma rackd[2724997]: File "/usr/lib/python3/dist-packages/twisted/application/app.py", line 432, in createOrGetApplication
Apr 3 01:35:38 noma rackd[2724997]: ser = plg.makeService(self.config.subOptions)
Apr 3 01:35:38 noma rackd[2724997]: File "/usr/lib/python3/dist-packages/provisioningserver/plugin.py", line 241, in makeService
Apr 3 01:35:38 noma rackd[2724997]: install_boot_method_templates(tftp_root)
Apr 3 01:35:38 noma rackd[2724997]: File "/usr/lib/python3/dist-packages/provisioningserver/boot/__init__.py", line 367, in install_boot_method_templates
Apr 3 01:35:38 noma rackd[2724997]: m.install_templates(tftp_root)
Apr 3 01:35:38 noma rackd[2724997]: File "/usr/lib/python3/dist-packages/provisioningserver/boot/ipxe.py", line 118, in install_templates
Apr 3 01:35:38 noma rackd[2724997]: with open(config_dst, "wb") as stream:
Apr 3 01:35:38 noma rackd[2724997]: PermissionError: [Errno 13] Permission denied: '/var/lib/maas/tftp_root/ipxe.cfg'