A Note is added under Section 4.4 Setting up the Heketi Server after Step 3. http://jenkinscat.gsslab.pnq.redhat.com:8080/job/doc-Red_Hat_Gluster_Storage-3.1-Deployment_Guide_for_Containerized_Red_Hat_Gluster_Storage%20%28html-single%29/lastStableBuild/artifact/tmp/en-US/html-single/index.html#idm140665055582832
Looks good.