[Upgrade] Octane fuel-restore command changes nailgun password

[Alisa Tselovalnikova]

Detailed bug description:
 The command "octane fuel-restore --from {data_backup} --admin-password {nailgun_password}" changes nailgun password.

Steps to reproduce:
 1. Deploy 8.0 Fuel
 2. Create data backup using:
    octane fuel-backup --to /root/data_backup.tar.gz
 3. Replace 8.0 fuel with 9.0 Fuel
 4. Restore data backup with incorrect using:
    octane fuel-restore --from {data_backup} --admin-password {nailgun_password}
After provided steps nailgun password is changed.

Actual result:
 Nailgun password is changed.

Reproducibility:
 100%

Description of the environment:
 8.0 - http://paste.openstack.org/show/539091/
 9.0 - http://paste.openstack.org/show/539092/
 octane 9.0.0-1.mos1207

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/366846

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/mitaka
Review: https://review.openstack.org/370662

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/370662
Committed: https://git.openstack.org/cgit/openstack/fuel-octane/commit/?id=7618ca3ac2d172df4bcb36b26516c38cd311ed83
Submitter: Jenkins
Branch: stable/mitaka

commit 7618ca3ac2d172df4bcb36b26516c38cd311ed83
Author: Nikita Zubkov <email address hidden>
Date: Wed Sep 7 18:45:10 2016 +0300

    Check that astute.yaml password is valid before backup

    This commit adds astute.yaml password validation in backup procedure. If
    we have a valid password we don't need ask a user about it and could use
    astute.yaml "as is" without fixing password there.

    Change-Id: I0dd79ec624159dd1132ca06a86b35d80941c8c39
    Partial-Bug: #1606613

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/366846
Committed: https://git.openstack.org/cgit/openstack/fuel-octane/commit/?id=d678e1453582336664b06c66a22f00041d021105
Submitter: Jenkins
Branch: master

commit d678e1453582336664b06c66a22f00041d021105
Author: Nikita Zubkov <email address hidden>
Date: Wed Sep 7 18:45:10 2016 +0300

    Check that astute.yaml password is valid before backup

    This commit adds astute.yaml password validation in backup procedure. If
    we have a valid password we don't need ask a user about it and could use
    astute.yaml "as is" without fixing password there.

    Change-Id: I0dd79ec624159dd1132ca06a86b35d80941c8c39
    Partial-Bug: #1606613

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/8.0
Review: https://review.openstack.org/373326

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/7.0
Review: https://review.openstack.org/373353

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/373326
Committed: https://git.openstack.org/cgit/openstack/fuel-octane/commit/?id=58faa33624aed93bf8d8032ce0b2386e06e76dd8
Submitter: Jenkins
Branch: stable/8.0

commit 58faa33624aed93bf8d8032ce0b2386e06e76dd8
Author: Nikita Zubkov <email address hidden>
Date: Tue Sep 20 16:29:03 2016 +0300

    Check that astute.yaml password is valid before backup

    This commit adds astute.yaml password validation in backup procedure. If
    we have a valid password we don't need ask a user about it and could use
    astute.yaml "as is" without fixing password there.

    Change-Id: I0dd79ec624159dd1132ca06a86b35d80941c8c39
    Partial-Bug: #1606613

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/373353
Committed: https://git.openstack.org/cgit/openstack/fuel-octane/commit/?id=502c8adf1bd9cb3f2fd3fdd5f98cf1def09b41db
Submitter: Jenkins
Branch: stable/7.0

commit 502c8adf1bd9cb3f2fd3fdd5f98cf1def09b41db
Author: Nikita Zubkov <email address hidden>
Date: Tue Sep 20 16:29:03 2016 +0300

    Check that astute.yaml password is valid before backup

    This commit adds astute.yaml password validation in backup procedure. If
    we have a valid password we don't need ask a user about it and could use
    astute.yaml "as is" without fixing password there.

    Change-Id: I0dd79ec624159dd1132ca06a86b35d80941c8c39
    Partial-Bug: #1606613

[Vladimir Khlyunev (vkhlyunev)]

Fixed by checking state of password stored in astute.yaml - #299

[TatyanaGladysheva (tgladysheva)]

Verified on 8.0 + MU4 updates.

Actual results:
Password stored in astute.yaml stays the same.