incorrect path when generating certificates.
The 'setting permissions on key' task fails because the task looks for
the haproxy.key in an invalid path. The certificates_dir is defined as
'{{ node_config }}/certificates' in the main.yml . The 'Setting
permissions on Key' task has a path of '{{ certificates_dir
}}/certificates/private/haproxy.key which is incorrect. Removing the
'certificates' in the path corrects this problem and allows the user to
successfully create certificates using 'kolla-ansible certificates'.
Change-Id: I37b10b994b05d955b6f67c908df1472231a91160
Closes-Bug: 1821805
c0a3970e36