Fix authorized_keys on slaves with not permissive rights on pubkey
Fix authorized_keys on slaves with not permissive rights on pubkey

virt-customize --upload copy id_rsa.pub to authorized keys, which
is propagated with the same rights as original user (root) into .ssh
folder. authorized_keys file is therefore unreadable for "stack"
user and Ansible is not able to SSH directly into stack user at all!

Change-Id: Ied75ffe092b37a5ee662aacd789e72ff807b3e29

redhat-openstack/infrared,redhat-openstack/infrared,redhat-openstack/infrared,okolisny/InfraRed,okolisny/InfraRed,okolisny/InfraRed