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, 0 insertions, 26 deletions

diff --git a/cloudinit/tests/test_event.py b/cloudinit/tests/test_event.py
deleted file mode 100644
index 3da4c70c..00000000
--- a/cloudinit/tests/test_event.py
+++ /dev/null
@@ -1,26 +0,0 @@
-# This file is part of cloud-init. See LICENSE file for license information.
-"""Tests related to cloudinit.event module."""
-from cloudinit.event import EventType, EventScope, userdata_to_events
-
-
-class TestEvent:
-    def test_userdata_to_events(self):
-        userdata = {'network': {'when': ['boot']}}
-        expected = {EventScope.NETWORK: {EventType.BOOT}}
-        assert expected == userdata_to_events(userdata)
-
-    def test_invalid_scope(self, caplog):
-        userdata = {'networkasdfasdf': {'when': ['boot']}}
-        userdata_to_events(userdata)
-        assert (
-            "'networkasdfasdf' is not a valid EventScope! Update data "
-            "will be ignored for 'networkasdfasdf' scope"
-        ) in caplog.text
-
-    def test_invalid_event(self, caplog):
-        userdata = {'network': {'when': ['bootasdfasdf']}}
-        userdata_to_events(userdata)
-        assert (
-            "'bootasdfasdf' is not a valid EventType! Update data "
-            "will be ignored for 'network' scope"
-        ) in caplog.text