Reorganize unit test locations under tests/unittests (#1126)

This attempts to standardize unit test file location under test/unittests/
such that any source file located at cloudinit/path/to/file.py may have a
corresponding unit test file at test/unittests/path/to/test_file.py.

Noteworthy Comments:
====================
Four different duplicate test files existed:
test_{gpg,util,cc_mounts,cc_resolv_conf}.py
Each of these duplicate file pairs has been merged together. This is a
break in git history for these files.

The test suite appears to have a dependency on test order. Changing test
order causes some tests to fail. This should be rectified, but for now
some tests have been modified in
tests/unittests/config/test_set_passwords.py.

A helper class name starts with "Test" which causes pytest to try
executing it as a test case, which then throws warnings "due to Class
having __init__()".  Silence by changing the name of the class.

# helpers.py is imported in many test files, import paths change
cloudinit/tests/helpers.py -> tests/unittests/helpers.py

# Move directories:
cloudinit/distros/tests -> tests/unittests/distros
cloudinit/cmd/devel/tests -> tests/unittests/cmd/devel
cloudinit/cmd/tests -> tests/unittests/cmd/
cloudinit/sources/helpers/tests -> tests/unittests/sources/helpers
cloudinit/sources/tests -> tests/unittests/sources
cloudinit/net/tests -> tests/unittests/net
cloudinit/config/tests -> tests/unittests/config
cloudinit/analyze/tests/ -> tests/unittests/analyze/

# Standardize tests already in tests/unittests/
test_datasource -> sources
test_distros -> distros
test_vmware -> sources/vmware
test_handler -> config        # this contains cloudconfig module tests
test_runs -> runs

1 files changed, 17 insertions, 0 deletions

diff --git a/tests/unittests/distros/test_netbsd.py b/tests/unittests/distros/test_netbsd.py
new file mode 100644
index 00000000..11a68d2a
--- /dev/null
+++ b/tests/unittests/distros/test_netbsd.py
@@ -0,0 +1,17 @@
+import cloudinit.distros.netbsd
+
+import pytest
+import unittest.mock as mock
+
+
+@pytest.mark.parametrize('with_pkgin', (True, False))
+@mock.patch("cloudinit.distros.netbsd.os")
+def test_init(m_os, with_pkgin):
+    print(with_pkgin)
+    m_os.path.exists.return_value = with_pkgin
+    cfg = {}
+
+    distro = cloudinit.distros.netbsd.NetBSD("netbsd", cfg, None)
+    expectation = ['pkgin', '-y', 'full-upgrade'] if with_pkgin else None
+    assert distro.pkg_cmd_upgrade_prefix == expectation
+    assert [mock.call('/usr/pkg/bin/pkgin')] == m_os.path.exists.call_args_list