Add Elasticsearch client package for OSprofile

OSprofile allows user/devs trace OpenStack requests.
OSprofiler is multi drivers support.
The simpler centralized system to use is Elasticsearch.
To allow Openstack services to store traces in Elasticsearch,
Elasticsearch client has to be installed in Docker Openstack-base image.

Change-Id: I1546c03603676b5e29ea56dacecb510e29bbf6f6
Implements: blueprint enable-osprofiler

docker/openstack-base/Dockerfile.j2

@@ -88,6 +88,7 @@ LABEL maintainer="{{ maintainer }}" name="{{ image_name }}" build-date="{{ build
             'python-designateclient',
             'python-dogpile-cache',
             'python-editor',
+            'python-elasticsearch',
             'python-enum34',
             'python-extras',
             'python-fixtures',
@@ -179,6 +180,7 @@ ENV DEBIAN_FRONTEND noninteractive
             'python-ceilometerclient',
             'python-congressclient',
             'python-designateclient',
+            'python-elasticsearch',
             'python-gnocchiclient',
             'python-heatclient',
             'python-ironicclient',
@@ -297,6 +299,7 @@ RUN curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py \
         'contextlib2',
         'debtcollector',
         'decorator',
+        'elasticsearch',
         'enum34',
         'eventlet',
         'fasteners',