Merge "Update Heka dockerfile for formatting"

docker/heka/Dockerfile.j2

@@ -3,7 +3,8 @@ MAINTAINER {{ maintainer }}
 
 {% if base_distro in ['centos', 'fedora', 'oraclelinux', 'rhel'] %}
 
-RUN yum -y install https://github.com/mozilla-services/heka/releases/download/v0.10.0/heka-0_10_0-linux-amd64.rpm \
+RUN yum -y install \
+        https://github.com/mozilla-services/heka/releases/download/v0.10.0/heka-0_10_0-linux-amd64.rpm \
     && yum clean all \
     && useradd --user-group heka \
     && mkdir /etc/heka