Use version to disable pulling from upstream during an update

[ehelms]

No description provided.

[evgeni]

The tests fail because the packaging repo stubs we ship are no git repositories.

There is some code that does a git setup, but it's not used universally:

obal/tests/test_functional.py

Lines 74 to 84 in cabab36

	def setup_upstream(upstream_path):
	# create a cloneable upstream repo, what we ship in fixtures is not
	subprocess.check_call(['git', 'init'], cwd=upstream_path)
	subprocess.check_call(['git', 'annex', 'init'], cwd=upstream_path)
	subprocess.check_call(['git', 'add', '.'], cwd=upstream_path)
	subprocess.check_call(['git', 'annex', 'addurl', '--file',
	'packages/hello/hello-2.10.tar.gz',
	'http://ftp.gnu.org/gnu/hello/hello-2.10.tar.gz'],
	cwd=upstream_path)
	subprocess.check_call(['git', 'commit', '-a', '-m', 'init'],
	cwd=upstream_path)

Other than that, I think version is a valid differentiator for the "do update" vs "pull update" scenarios.

[evgeni]

#145 should fix the tests for you.

[evgeni]

Given no tests broke when you modified this behavior in #68, I think we should add tests for this branch of logic now?

[evgeni]

APT

[evgeni]

you can't fetch hello.tar from example.com (and thus git-annex blows up), so maybe let's just skip this assert