[system-tests] Update upgrade test cases for data-driven fuel upgrade(+rollback) from 7.0 to 8.0

[Vladimir Khlyunev]

We should update all upgrade tests because the upgrade procedure was changed.

Work items:
1) Remove old upgrade&rollback tests and related code
2) Implement common methods for executing upgrade
3) Implement new scenarios for upgrade. All scenarios should include following cases/steps:
- Base deployment of 7.0 cluster (non-ha is preferable - it will be scaled up later)
- Backup creation using fuel-octane
- Re-installation of fuel master node (using 8.0 iso for upgrade or 7.0 iso for rollback)
- Restoration of backup using fuel-octane
- Scale existing cluster
- Reset and redeploy cluster
- Deployment of new cluster

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/281224
Committed: https://git.openstack.org/cgit/openstack/fuel-qa/commit/?id=4daa44e2b8f158ce3e592081530f94a1fb311567
Submitter: Jenkins
Branch: master

commit 4daa44e2b8f158ce3e592081530f94a1fb311567
Author: Vladimir Khlyunev <email address hidden>
Date: Wed Feb 17 15:11:55 2016 +0300

    Remove obsolete upgrade code

    Since upgrade procedure were changed and tarball-based upgrade is no longer available
    we can remove all tarbal-related code from fuel-qa

    Change-Id: Id62ad622a42bd35aeeee866cb20651e7086c7720
    Partial-bug:1546943

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/8.0
Review: https://review.openstack.org/292825

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/293332

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/293332
Committed: https://git.openstack.org/cgit/openstack/fuel-qa/commit/?id=207f06ecf11ebe41d090ebb5232a815a3418e87b
Submitter: Jenkins
Branch: master

commit 207f06ecf11ebe41d090ebb5232a815a3418e87b
Author: Vladimir Khlyunev <email address hidden>
Date: Wed Mar 16 12:10:56 2016 +0300

    Disable OS upgrade tests

    The OS upgrade procedure was changed and actual code
    contains outdated upgrade procedure which uses tarball-based upgrade.
    We should disable this tests until new upgrade of OS will be implemented

    Change-Id: Ide45d1c03114e472c7f83871dac1ba54536575e0
    Partial-bug:1546943
    Related-bug:1556791

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/292825
Committed: https://git.openstack.org/cgit/openstack/fuel-qa/commit/?id=020a0ba94132dfc65580e2f36bf4d2770ea74de7
Submitter: Jenkins
Branch: stable/8.0

commit 020a0ba94132dfc65580e2f36bf4d2770ea74de7
Author: Vladimir Khlyunev <email address hidden>
Date: Wed Feb 17 15:11:55 2016 +0300

    Remove obsolete upgrade code

    Since upgrade procedure were changed and tarball-based upgrade is no longer available
    we can remove all tarbal-related code from fuel-qa

    Change-Id: Id62ad622a42bd35aeeee866cb20651e7086c7720
    Partial-bug:1546943
    (cherry picked from commit 4daa44e2b8f158ce3e592081530f94a1fb311567)

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/280605
Committed: https://git.openstack.org/cgit/openstack/fuel-qa/commit/?id=8b9bac01e99effac364491ba9f12e0f2f17b91ea
Submitter: Jenkins
Branch: master

commit 8b9bac01e99effac364491ba9f12e0f2f17b91ea
Author: Vladimir Khlyunev <email address hidden>
Date: Tue Feb 16 13:47:43 2016 +0300

    Add tests for new data-driven upgrade procedure

    The upgrade procedure was completely changed because
    of changing base OS for Fuel (Centos7). It leads to
    complete refactoring of all upgrade-related code
    including tests

    This commit should be backportable to 7.0 branch
    because we need to prepare some 7.0 clusters.
    This is the reason of rejecting SSHManager
     _for this commit_. It will be integrated later.

    Change-Id: I1932c28beb9a7101019a02d4cd5245a1a0996a05
    Partial-bug:1546943

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/8.0
Review: https://review.openstack.org/302130

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/7.0
Review: https://review.openstack.org/302139

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/302139
Committed: https://git.openstack.org/cgit/openstack/fuel-qa/commit/?id=4b1e7a6e5b5fb4c370fce8c092116cf23a6aab0d
Submitter: Jenkins
Branch: stable/7.0

commit 4b1e7a6e5b5fb4c370fce8c092116cf23a6aab0d
Author: Vladimir Khlyunev <email address hidden>
Date: Tue Feb 16 13:47:43 2016 +0300

    Add tests for new data-driven upgrade procedure

    The upgrade procedure was completely changed because
    of changing base OS for Fuel (Centos7). It leads to
    complete refactoring of all upgrade-related code
    including tests

    This commit should be backportable to 7.0 branch
    because we need to prepare some 7.0 clusters.
    This is the reason of rejecting SSHManager
     _for this commit_. It will be integrated later.

    Change-Id: I1932c28beb9a7101019a02d4cd5245a1a0996a05
    Partial-bug:1546943

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/302130
Committed: https://git.openstack.org/cgit/openstack/fuel-qa/commit/?id=168d6df2b416c3aea9ef800a01e46691f76cf026
Submitter: Jenkins
Branch: stable/8.0

commit 168d6df2b416c3aea9ef800a01e46691f76cf026
Author: Vladimir Khlyunev <email address hidden>
Date: Tue Feb 16 13:47:43 2016 +0300

    Add tests for new data-driven upgrade procedure

    The upgrade procedure was completely changed because
    of changing base OS for Fuel (Centos7). It leads to
    complete refactoring of all upgrade-related code
    including tests

    This commit should be backportable to 7.0 branch
    because we need to prepare some 7.0 clusters.
    This is the reason of rejecting SSHManager
     _for this commit_. It will be integrated later.

    Change-Id: I1932c28beb9a7101019a02d4cd5245a1a0996a05
    Partial-bug:1546943
    (cherry picked from commit 8b9bac01e99effac364491ba9f12e0f2f17b91ea)