Add CentOS base OS

Implement the CentOS 7 base operating system.

Change-Id: I1c90fe88baecf3deabad689a6743346a092469c2
Partially-implements: blueprint multi-baseos

docker/centos-rdo-base/Dockerfile

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+FROM centos
+MAINTAINER Kolla Project (https://launchpad.net/kolla)
+
+# Set up repositories
+RUN yum install -y https://rdo.fedorapeople.org/rdo-release.rpm
+RUN curl https://copr.fedoraproject.org/coprs/larsks/crux/repo/epel-7/larsks-crux-epel-7.repo -o /etc/yum.repos.d/larsks-crux-epel-7.repo
+
+RUN yum install -y epel-release; yum clean all
+
+# Update packages
+RUN yum update -y; yum clean all
+
+# Install base packages
+RUN yum install -y \
+	crux \
+	mariadb \
+	mariadb-libs \
+	openssl \
+	openstack-utils \
+	pyparsing \
+	python-alembic \
+	python-amqp \
+	python-amqplib \
+	python-anyjson \
+	python-boto \
+	python-cheetah \
+	python-cliff \
+	python-cmd2 \
+	python-croniter \
+	python-crypto \
+	python-d2to1 \
+	python-docutils \
+	python-dogpile-cache \
+	python-dogpile-core \
+	python-empy \
+	python-eventlet \
+	python-flask \
+	python-futures \
+	python-greenlet \
+	python-httplib2 \
+	python-iso8601 \
+	python-itsdangerous \
+	python-jinja2 \
+	python-jsonpatch \
+	python-jsonpath-rw \
+	python-jsonpointer \
+	python-jsonschema \
+	python-keyring \
+	python-kombu \
+	python-ldap \
+	python-lesscpy \
+	python-lockfile \
+	python-lxml \
+	python-markdown \
+	python-memcached \
+	python-migrate \
+	python-msgpack \
+	python-netifaces \
+	python-networkx \
+	python-oauthlib \
+	python-oslo-config \
+	python-oslo-messaging \
+	python-oslo-rootwrap \
+	python-paramiko \
+	python-passlib \
+	python-paste-deploy \
+	python-pbr \
+	python-pecan \
+	python-ply \
+	python-prettytable \
+	python-psutil \
+	python-pycadf \
+	python-pygments \
+	python-pymongo \
+	python-qpid \
+	python-repoze-lru \
+	python-requests \
+	python-routes \
+	python-simplegeneric \
+	python-simplejson \
+	python-singledispatch \
+	python-six \
+	python-sqlalchemy \
+	python-stevedore \
+	python-taskflow \
+	python-versiontools \
+	python-warlock \
+	python-webob \
+	python-websockify \
+	python-webtest \
+	python-werkzeug \
+	python-wsme \
+	; yum clean all
+
+RUN mkdir -p /opt/kolla
+ADD service_hosts.sh /opt/kolla/service_hosts.sh
+ADD kolla-common.sh /opt/kolla/kolla-common.sh

docker/centos-rdo-base/build

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+../../tools/build-docker-image

docker/centos-rdo-base/kolla-common.sh

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+../base/kolla-common.sh

docker/centos-rdo-base/service_hosts.sh

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+../base/service_hosts.sh