Merge "Fixes kolla_toolbox failure due to missing pytz module"

docker/kolla-toolbox/Dockerfile.j2

@@ -35,6 +35,7 @@ RUN apt-get -y --no-install-recommends install \
 RUN curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py \
     && python get-pip.py \
     && rm get-pip.py \
+    && pip --no-cache-dir install pytz \
     && pip --no-cache-dir install \
         MySQL-python \
         os-client-config==1.16.0 \