Upstream rsyslog packaging changes

- add rsyslog repo to Dockerfile for AWX installation
 - Update Library Notes for requests-futures removal

installer/roles/image_build/templates/Dockerfile.j2

@@ -97,6 +97,10 @@ RUN cd /usr/local/bin && \
     curl -L https://github.com/openshift/origin/releases/download/v3.11.0/openshift-origin-client-tools-v3.11.0-0cbc58b-linux-64bit.tar.gz | \
     tar -xz --strip-components=1 --wildcards --no-anchored 'oc'
 
+ADD rsyslog.repo /etc/yum.repos.d/
+RUN yum install -y rsyslog-omhttp
+RUN echo '$IncludeConfig /var/lib/awx/rsyslog.conf' >> /etc/rsyslog.conf
+
 # Pre-create things that we need to write to
 RUN for dir in /home/awx /var/log/tower /var/log/nginx /var/lib/nginx; \
     do mkdir -p $dir; chmod -R g+rwx $dir; chgrp -R root $dir; done && \