Convert keystone from eventlet to httpd

eventlet in master (Delorean) has had a regression making Keystone
not work well with it.  Instead, we have decided to switch to the
recommended deployment model using httpd.

Change-Id: Ie5407ae4fab9882b301925ddfa1b065923bbd52f
Closes-Bug: #1469851

docker/centos/binary/keystone/Dockerfile

@@ -1,14 +1,24 @@
 FROM %%KOLLA_NAMESPACE%%/%%KOLLA_PREFIX%%base:%%KOLLA_TAG%%
 MAINTAINER Kolla Project (https://launchpad.net/kolla)
 
-#Install required packages
 RUN yum -y install openstack-keystone \
         python-keystoneclient \
+        httpd \
+        mod_wsgi \
         && yum clean all
 
+RUN mkdir -p /var/www/cgi-bin/keystone
+RUN cp -a /usr/share/keystone/wsgi-keystone.conf /etc/httpd/conf.d
+RUN sed -i 's,/var/log/apache2,/var/log/httpd,' /etc/httpd/conf.d/wsgi-keystone.conf
+RUN sed -i -r 's,^(Listen 80),#\1,' /etc/httpd/conf/httpd.conf
+RUN cp -a /usr/share/keystone/keystone.wsgi /var/www/cgi-bin/keystone/main
+RUN cp -a /usr/share/keystone/keystone.wsgi /var/www/cgi-bin/keystone/admin
+RUN chown -R keystone:keystone /var/www/cgi-bin/keystone
+RUN chmod 755 /var/www/cgi-bin/keystone/*
+
 # Add start-up and check scripts
-ADD ./start.sh /start.sh
-ADD ./check.sh /check.sh
+COPY ./start.sh /start.sh
+COPY ./check.sh /check.sh
 
 # Run the Keystone start script
 CMD ["/start.sh"]

docker/common/keystone/start.sh

@@ -132,7 +132,7 @@ fi
 
 # Start Keystone
 echo "Starting Keystone"
-/usr/bin/keystone-all &
+/usr/sbin/httpd -DFOREGROUND &
 PID=$!
 
 # Export Keystone service environment variables