`sudo` is required to docker command on dev-quickstart#exercising-the-services-using-devstack

[Yusaku Sawai]

This part of the document requires "sudo" when executing.

    ssh minion@192.168.19.86
    REDIS_ID=$(docker ps | grep redis:v1 | grep k8s_master | awk '{print $1}')

time="2015-07-10T08:29:17Z" level="fatal" msg="Get http:///var/run/docker.sock/v1.17/containers/json: dial unix /var/run/docker.sock: permission denied. Are you trying to connect to a TLS-enabled daemon without TLS?"

    echo $REDIS_ID
    (blank)

by using sudo it can be solved.

    REDIS_ID=$(docker ps | grep redis:v1 | grep k8s_master | awk '{print $1}')
    echo $REDIS_ID
    60f08d48b26c

also "docker exec" command requires "sudo" too.

    docker exec -i -t $REDIS_ID redis-cli
    FATA[0000] Post http:///var/run/docker.sock/v1.17/containers/60f08d48b26c/exec: dial unix /var/run/docker.sock: permission denied. Are you trying to connect to a TLS-enabled daemon without TLS?

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/200426

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/200426
Committed: https://git.openstack.org/cgit/openstack/magnum/commit/?id=cf1c6221695e167751767de99283d94f918f6c0e
Submitter: Jenkins
Branch: master

commit cf1c6221695e167751767de99283d94f918f6c0e
Author: Yusaku Sawai <email address hidden>
Date: Fri Jul 10 17:57:01 2015 +0900

    Add `sudo` before `docker` command on dev docs

    Add `sudo` before `docker ps` and `docker exec` on dev-quickstart.rst.
    At the section "exercising-the-services-using-devstack".

    Change-Id: I6d418d53e83fcdc4eeb6c728535300c39c3e8723
    Closes-Bug: #1473339