Fix tempest gate, add tempest import to our script

Change-Id: I0c3094c724b0c72fe79fb38ce628c808620be03a

functionaltests/run_tests.sh

@@ -32,5 +32,8 @@ MISTRALCLIENT_DIR=/opt/stack/new/python-mistralclient
 # Define PYTHONPATH
 export PYTHONPATH=$PYTHONPATH:$TEMPEST_DIR
 
+#installing requirements for tempest
+pip install -r $TEMPEST_DIR/requirements.txt
+
 pwd
 nosetests -sv mistral/tests/functional/

mistral/tests/functional/api/v2/test_mistral_basic_v2.py

@@ -13,6 +13,7 @@
 # under the License.
 
 from tempest import test
+from tempest_lib import decorators
 from tempest_lib import exceptions
 
 from mistral.tests.functional import base
@@ -467,7 +468,7 @@ class CronTriggerTestsV2(base.TestCase):
                           self.client.create_cron_trigger,
                           tr_name, '5 * * * *', self.wf_name)
 
-    @test.skip_because(bug="1383146")
+    @decorators.skip_because(bug="1383146")
     @test.attr(type='negative')
     def test_create_two_cron_triggers_with_same_pattern(self):
         self.client.create_trigger(