Comment 4 for bug 1687408

Reviewed: https://review.openstack.org/462052
Committed: https://git.openstack.org/cgit/openstack/kolla-ansible/commit/?id=b969608f50e5588c1b4312fb4cffa7d83d454197
Submitter: Jenkins
Branch: stable/ocata

commit b969608f50e5588c1b4312fb4cffa7d83d454197
Author: Eduardo Gonzalez <email address hidden>
Date: Mon May 1 13:02:43 2017 +0100

    Add ssh-keyscan to unblock kolla-ansible gate

    As a change to remove puppet from infra nodepool, ssh-keyscan is needed
    for each node.[0] Host key checking was disabled by default by jenkins
    user.[1]

    ssh/config permissions are 664 currently, causing error
    `Bad owner or permissions on /home/jenkins/.ssh/config`
    Config file should only be writen by owner.[2]

    Refs:
    [0] http://lists.openstack.org/pipermail/openstack-dev/2017-April/116036.html
    [1] https://review.openstack.org/#/c/460731/
    [2] http://logs.openstack.org/68/461368/1/check/gate-kolla-ansible-dsvm-deploy-centos-binary-centos-7-nv/0a94da7/console.html#_2017-05-01_12_06_08_440775

    This change was merged with PS https://review.openstack.org/#/c/460782/
    in order to fix the gate with only one change.

    Closes-Bug: #1687408
    Change-Id: Id804f11a91858fa297e5236beb2110e3511eabec
    (cherry picked from commit ba6e3249d2bc1e125a95ea2fc13ac7b130c2059a)