Fix incorrect cmdline parsing in BaseCLITest

str.split replaced with shlex.split in exec_command method.

BaseCLITest.exec_command fails if passed command line string
contains arguments with spaces, since str.split is used to
split arguments from string to argv list.

Change-Id: Ib5558d1787044399718f36d34e6d7a5e5e331fb3
Closes-Bug: #1482133

fuelclient/tests/v2/unit/cli/test_engine.py

@@ -14,6 +14,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+import shlex
 import sys
 
 import mock
@@ -48,7 +49,7 @@ class BaseCLITest(base.UnitTestCase):
     def exec_command(self, command=''):
         """Executes fuelclient with the specified arguments."""
 
-        return main_mod.main(argv=command.split())
+        return main_mod.main(argv=shlex.split(command))
 
     def exec_command_interactive(self, commands):
         """Executes specified commands in one sesstion of interactive mode

fuelclient/tests/v2/unit/cli/test_node.py

@@ -91,13 +91,13 @@ class TestNodeCommand(test_engine.BaseCLITest):
         self.m_client.get_node_vms_conf.assert_called_once_with(node_id)
 
     def test_node_vms_conf_create(self):
-        vms_conf = """{"id":2} {"id":3}"""
+        vms_conf = r'{\"id\":2} {\"id\":3}'
         config = [{'id': 2},
                   {'id': 3}]
 
         node_id = 42
 
-        args = "node create-vms-conf {0} --conf {1}".format(
+        args = 'node create-vms-conf {0} --conf {1}'.format(
             node_id,
             vms_conf)
         self.exec_command(args)