Add retries on creating archive tar

[shanejbrown]

What does this PR do?

Add retries around the archive tarfile.

What issues does this PR fix or reference?

Minimizes the possibility of an error when multiple buildrunner processes are running concurrently in the same directory. It still possible but is less likely.

15:35:31 Traceback (most recent call last):
15:35:31 File "/bin/buildrunner", line 14, in
15:35:31 sys.exit(cli.main(sys.argv))
15:35:31 File "/usr/lib64/buildrunner/lib/python3.9/site-packages/buildrunner/cli.py", line 414, in main
15:35:31 build_runner.run()
15:35:31 File "/usr/lib64/buildrunner/lib/python3.9/site-packages/buildrunner/init.py", line 373, in run
15:35:31 self.get_source_archive_path()
15:35:31 File "/usr/lib64/buildrunner/lib/python3.9/site-packages/buildrunner/init.py", line 261, in get_source_archive_path
15:35:31 tfile.add(self.build_dir, arcname="", filter=_exclude_working_dir)
15:35:31 File "/usr/lib64/python3.9/tarfile.py", line 1994, in add
15:35:31 self.add(os.path.join(name, f), os.path.join(arcname, f),
15:35:31 File "/usr/lib64/python3.9/tarfile.py", line 1994, in add
15:35:31 self.add(os.path.join(name, f), os.path.join(arcname, f),
15:35:31 File "/usr/lib64/python3.9/tarfile.py", line 1972, in add
15:35:31 tarinfo = self.gettarinfo(name, arcname)
15:35:31 File "/usr/lib64/python3.9/tarfile.py", line 1851, in gettarinfo
15:35:31 statres = os.lstat(name)
15:35:31 FileNotFoundError: [Errno 2] No such file or directory: '/raid/build/workspace/services_PR-83/.git/index.lock'
script returned exit code 1

Previous Behavior

New Behavior

Merge requirements satisfied?

• I have updated the documentation or no documentation changes are required.
• I have added tests to cover my changes.
• I have updated the base version in setup.py (if appropriate).