Comment 2 for bug 1687408

Reviewed: https://review.openstack.org/461862
Committed: https://git.openstack.org/cgit/openstack/kolla/commit/?id=6cdd99875e8c1a07400b026d015916e37c0c70e3
Submitter: Jenkins
Branch: stable/ocata

commit 6cdd99875e8c1a07400b026d015916e37c0c70e3
Author: Eduardo Gonzalez <email address hidden>
Date: Fri Apr 28 01:57:42 2017 +0200

    Add ssh-keyscan to unblock kolla gate

    As a change to remove puppet from infra nodepool,
    ssh-keyscan is needed for each node [0]

    Permissions to ssh/config file should be 600 instead
    of current 664 [1]

    Refs:
    [0] http://lists.openstack.org/pipermail/openstack-dev/2017-April/116036.html
    [1] 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

    Closes-Bug: #1687408
    Change-Id: I338e457fff35d8a28bd9f96e88dbb4ee55a47864
    (cherry picked from commit 508f73e059fdfe8e051c58762dc8e21d826d54db)