After files being copied, the new code remove read permission
from key files. They are with read flag enabled for group and
other.
Files changed after this change:
/etc/etcd/ca.key
/etc/etcd/etcd-server.key
/etc/etcd/etcd-client.key
/etc/ssl/private/registry-cert.key
Test Plan:
PASS: Verify that read file permission of the file is removed
from files with .key extension in /etc/etcd
Closes-Bug: 1949781
Change-Id: I8159ecc8c4a4f5255447b28a1826637673a7c0ef
Signed-off-by: Alexandre Horst <alexandre.horst@windriver.com>
9b5e0571e3