Add python-gnocchiclient to ceilomter base image

Closes-Bug: #1654495
Change-Id: I9a3f76ec66dd87ac9797fdc78d788460ba2d673e
(cherry picked from commit 1a6a952f78)

docker/ceilometer/ceilometer-base/Dockerfile.j2

@@ -9,12 +9,14 @@ MAINTAINER {{ maintainer }}
     {% if base_distro in ['centos', 'fedora', 'oraclelinux', 'rhel'] %}
         {% set ceilometer_base_packages = [
             'openstack-ceilometer-common',
+            'python-gnocchiclient',
             'python-tooz',
             'python-oslo-db'
          ] %}
     {% elif base_distro in ['ubuntu'] %}
         {% set ceilometer_base_packages = [
             'ceilometer-common',
+            'python-gnocchiclient',
             'python-pymongo'
          ] %}
     {% endif %}