Applied tier0 and tier1 marks on unit tests and xmlrpc tests

Web UI tests were marked as tier1 tests.

The tier system is intended to be used together with CI system
to make sure the more complicated tests are being run only
when all of the basic functionality is working.

The system is using pytest's marker system. E.g. an invocation of
all tier1 tests with listing will look like:

    $ py.test -v -m tier1 ipatests

or in case of out of tree tests:

    $ ipa-run-tests -m tier1

Reviewed-By: Ales 'alich' Marecek <amarecek@redhat.com>

ipatests/test_ipapython/test_cookie.py

@@ -24,6 +24,10 @@ import email.utils
 import calendar
 from ipapython.cookie import Cookie
 
+import pytest
+
+pytestmark = pytest.mark.tier0
+
 class TestParse(unittest.TestCase):
 
     def test_parse(self):

ipatests/test_ipapython/test_dn.py

@@ -1,5 +1,7 @@
 import contextlib
 import unittest
+import pytest
+from ipapython.dn import *  # FIXME
 
 import six
 
@@ -29,6 +31,8 @@ if six.PY3:
             assert a >= b
             return 1
 
+pytestmark = pytest.mark.tier0
+
 
 def expected_class(klass, component):
     if klass is AVA:

ipatests/test_ipapython/test_ipap11helper.py

@@ -19,6 +19,7 @@ from ipaplatform.paths import paths
 
 import _ipap11helper
 
+pytestmark = pytest.mark.tier0
 
 CONFIG_DATA = """
 # SoftHSM v2 configuration file

ipatests/test_ipapython/test_ipautil.py

@@ -28,6 +28,10 @@ import six
 
 from ipapython import ipautil
 
+import pytest
+
+pytestmark = pytest.mark.tier0
+
 
 def make_ipaddress_checker(addr, words=None, prefixlen=None):
     def check_ipaddress():

ipatests/test_ipapython/test_ipavalidate.py

@@ -21,9 +21,12 @@ import sys
 sys.path.insert(0, ".")
 
 import unittest
+import pytest
 
 from ipapython import ipavalidate
 
+pytestmark = pytest.mark.tier0
+
 class TestValidate(unittest.TestCase):
     def test_validEmail(self):
         self.assertEqual(True, ipavalidate.Email("test@freeipa.org"))

ipatests/test_ipapython/test_keyring.py

@@ -23,6 +23,10 @@ Test the `kernel_keyring.py` module.
 from nose.tools import raises, assert_raises  # pylint: disable=E0611
 from ipapython import kernel_keyring
 
+import pytest
+
+pytestmark = pytest.mark.tier0
+
 TEST_KEY = 'ipa_test'
 TEST_VALUE = 'abc123'
 UPDATE_VALUE = '123abc'

ipatests/test_ipapython/test_ssh.py

@@ -24,12 +24,15 @@ import base64
 
 import six
 import nose
+import pytest
 
 from ipapython import ssh
 
 if six.PY3:
     unicode = str
 
+pytestmark = pytest.mark.tier0
+
 
 def make_public_key_checker(pk, out):
     def check_public_key():