Import not found for glance

Glance now depends on python-castellan and python-cryptography but
the package is not in the package depends list.

Change-Id: I8ba8c191572b0c7f51df5948a2951d9a7e0aead4
Closes-Bug: #1492641

docker/glance/glance-base/Dockerfile.j2

@@ -8,6 +8,8 @@ MAINTAINER Kolla Project (https://launchpad.net/kolla)
 RUN yum -y install \
         openstack-glance \
         python-oslo-i18n \
+        python-castellan \
+        python-cryptography \
     && yum clean all
 
     {% elif base_distro in ['ubuntu', 'debian'] %}