Autoscaler is failing with KeyError: 'headnode.internal.cloudapp.net'

On some systems, it appears that PBS commands `qmgr list sched` and `qmgr list server` sometimes return values with long names and not short names, making the research of a scheduler to failed with the following stack trace

`
2025-09-18 08:49:02,300 DEBUG: Full stacktrace
Traceback (most recent call last):
File "/opt/cycle/pbspro/venv/lib/python3.6/site-packages/hpc/autoscale/clilib.py", line 1890, in main
args.func(**kwargs)
File "/opt/cycle/pbspro/venv/lib/python3.6/site-packages/hpc/autoscale/clilib.py", line 434, in autoscale
output_columns = output_columns or self._get_default_output_columns(config)
File "/opt/cycle/pbspro/venv/lib/python3.6/site-packages/hpc/autoscale/clilib.py", line 1075, in _get_default_output_columns
default_cmd = self._default_output_columns(config, cmd_name)
File "/opt/cycle/pbspro/venv/lib/python3.6/site-packages/pbspro/cli.py", line 76, in _default_output_columns
env = self._pbs_env(driver)
File "/opt/cycle/pbspro/venv/lib/python3.6/site-packages/pbspro/cli.py", line 110, in _pbs_env
self.__pbs_env = environment.from_driver(pbs_driver.config, pbs_driver)
File "/opt/cycle/pbspro/venv/lib/python3.6/site-packages/pbspro/environment.py", line 52, in from_driver
schedulers = pbs_driver.read_schedulers()
File "/opt/cycle/pbspro/venv/lib/python3.6/site-packages/pbspro/driver.py", line 562, in read_schedulers
return read_schedulers(self.pbscmd, self.resource_definitions)
File "/opt/cycle/pbspro/venv/lib/python3.6/site-packages/pbspro/scheduler.py", line 84, in read_schedulers
server_dict = server_dicts_by_host[hostname]
KeyError: 'headnode.internal.cloudapp.net'
`

A suggested fix would be to use short names in the dictionary lookup line 83 and make sure that the scheduler is always using short names.