Merge pull request #822 from ajkavanagh/unittests-no-threads-in-zaza

Ensure unittests use zaza non-threaded

unit_tests/__init__.py

@@ -11,3 +11,8 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+
+# force zaza to not use threads for async
+import zaza
+
+zaza.RUN_LIBJUJU_IN_THREAD = False