handle blank lines in Procfile and Deployfile

[trnubo]

Getting the following error

Traceback (most recent call last):
File "/usr/src/app/.venv/bin/bureaucrat", line 407, in <module>
args.func(args)
File "/usr/src/app/.venv/bin/bureaucrat", line 343, in init
deploy(args)
File "/usr/src/app/.venv/bin/bureaucrat", line 338, in deploy
b = bureaucrat_init(args, process_file='Deployfile', create_pids=False)
File "/usr/src/app/.venv/bin/bureaucrat", line 317, in bureaucrat_init
b.load_processfile(process_file, create_pids, named_procs)
File "/usr/src/app/.venv/bin/bureaucrat", line 226, in load_processfile
named_procs)
File "/usr/src/app/.venv/bin/bureaucrat", line 158, in __init__
self.processes = self._parse_process_file(process_file, log_path, pid_path)
File "/usr/src/app/.venv/bin/bureaucrat", line 188, in _parse_process_file
raise Exception('Bad Process file line')
Exception: Bad Process file line

And think its due to a Deployfile containing blank lines.

migrate: manage.py migrate --noinput