[upgrade master][6.0->8.0] octane fuel-restore fails: can't find file to patch at input line 5

Detailed bug description:

Steps to reproduce:
 1. Install Fuel Admin node using ISO 6.0
 2. Create cluster HA
 3. Upgrade up to 6.1
 4. Upgrade up to 7.0
 5. Install fuel-octane
 6. Create backup of Fuel Admin node configuration
 7. Install Fuel Admin node using ISO 8.0
 8. Update with lastest MU
 9. Install fuel-octane
 10. Restore backup:
     octane --debug fuel-restore --from ./fuel7_backup.tar --admin-password admin
Expected results:
 Restore is successfully finished

Actual result:
 [2016-07-05 17:32:23,932] INFO octane.util.subprocess Process patch finished with return value 1
[2016-07-05 17:32:23,932] INFO octane.util.subprocess patch[3043] stdout: can't find file to patch at input line 5
[2016-07-05 17:32:23,935] INFO octane.util.subprocess patch[3043] stdout: Perhaps you used the wrong -p or --strip option?
[2016-07-05 17:32:23,935] INFO octane.util.subprocess patch[3043] stdout: The text leading up to this was:
[2016-07-05 17:32:23,936] INFO octane.util.subprocess patch[3043] stdout: --------------------------
[2016-07-05 17:32:23,936] INFO octane.util.subprocess patch[3043] stdout: |diff --git a/deployment/puppet/nailgun/manifests/venv.pp b/deployment/puppet/nailgun/manifests/venv.pp
[2016-07-05 17:32:23,936] INFO octane.util.subprocess patch[3043] stdout: |index 3313333..c383160 100644
[2016-07-05 17:32:23,936] INFO octane.util.subprocess patch[3043] stdout: |--- venv.pp
[2016-07-05 17:32:23,936] INFO octane.util.subprocess patch[3043] stdout: |+++ venv.pp
[2016-07-05 17:32:23,936] INFO octane.util.subprocess patch[3043] stdout: --------------------------
[2016-07-05 17:32:23,937] INFO octane.util.subprocess patch[3043] stdout: File to patch:
[2016-07-05 17:32:23,937] INFO octane.util.subprocess patch[3043] stdout: Skip this patch? [y]
[2016-07-05 17:32:23,937] INFO octane.util.subprocess patch[3043] stdout: Skipping patch.
[2016-07-05 17:32:23,937] INFO octane.util.subprocess patch[3043] stdout: 1 out of 1 hunk ignored
[2016-07-05 17:32:23,938] INFO octane.util.subprocess patch[3046] stdout: can't find file to patch at input line 5
[2016-07-05 17:32:23,938] INFO octane.util.subprocess patch[3046] stdout: Perhaps you used the wrong -p or --strip option?
[2016-07-05 17:32:23,939] INFO octane.util.subprocess Started process patch[3046]: patch -N -p1
[2016-07-05 17:32:23,939] INFO octane.util.subprocess patch[3046] stdout: The text leading up to this was:
[2016-07-05 17:32:23,940] INFO octane.util.subprocess Process patch finished with return value 1
[2016-07-05 17:32:23,940] INFO octane.util.subprocess patch[3046] stdout: --------------------------
[2016-07-05 17:32:23,941] INFO octane.util.subprocess patch[3046] stdout: |diff --git a/deployment/puppet/nailgun/manifests/venv.pp b/deployment/puppet/nailgun/manifests/venv.pp
[2016-07-05 17:32:23,942] INFO octane.util.subprocess patch[3046] stdout: |index 3313333..c383160 100644
[2016-07-05 17:32:23,942] INFO octane.util.subprocess patch[3046] stdout: |--- venv.pp
[2016-07-05 17:32:23,942] INFO octane.util.subprocess patch[3046] stdout: |+++ venv.pp
[2016-07-05 17:32:23,943] INFO octane.util.subprocess patch[3046] stdout: --------------------------
[2016-07-05 17:32:23,944] INFO octane.util.subprocess patch[3046] stdout: File to patch:
[2016-07-05 17:32:23,944] INFO octane.util.subprocess patch[3046] stdout: Skip this patch? [y]
[2016-07-05 17:32:23,945] INFO octane.util.subprocess patch[3046] stdout: Skipping patch.
[2016-07-05 17:32:23,945] INFO octane.util.subprocess patch[3046] stdout: 1 out of 1 hunk ignored
[2016-07-05 17:32:23,943] ERROR octane Command 'patch' returned non-zero exit status 1
Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/cliff/app.py", line 374, in run_subcommand
    result = cmd.run(parsed_args)
  File "/usr/lib/python2.7/site-packages/cliff/command.py", line 54, in run
    self.take_action(parsed_args)
  File "/usr/lib/python2.7/site-packages/octane/commands/restore.py", line 56, in take_action
    self.get_context(parsed_args))
  File "/usr/lib/python2.7/site-packages/octane/commands/restore.py", line 31, in restore_data
    archivator.restore()
  File "/usr/lib/python2.7/site-packages/octane/handlers/backup_restore/postgres.py", line 103, in restore
    docker.apply_patches(*args)
  File "/usr/lib/python2.7/site-packages/octane/util/docker.py", line 131, in apply_patches
    patch.patch_apply(tempdir, patches, revert)
  File "/usr/lib/python2.7/site-packages/octane/util/patch.py", line 30, in patch_apply
    subprocess.call(["patch", "-N", "-p1"], stdin=patch, cwd=cwd)
  File "/usr/lib/python2.7/site-packages/octane/util/subprocess.py", line 200, in call
    return proc.communicate()
  File "/usr/lib64/python2.7/contextlib.py", line 24, in __exit__
    self.gen.next()
  File "/usr/lib/python2.7/site-packages/octane/util/subprocess.py", line 195, in popen
    raise CalledProcessError(rv, name)
CalledProcessError: Command 'patch' returned non-zero exit status 1
Reproducibility:
 ?
Workaround:
  No
Impact:
  Critical
Description of the environment:
# rpm -qa | grep -i octane
fuel-octane-8.0.0-1.mos1182.noarch
VERSION:
  feature_groups:
    - mirantis
  production: "docker"
  release: "8.0"
  api: "1.0"
  build_number: "570"
  build_id: "570"
  fuel-nailgun_sha: "558ca91a854cf29e395940c232911ffb851899c1"
  python-fuelclient_sha: "4f234669cfe88a9406f4e438b1e1f74f1ef484a5"
  fuel-agent_sha: "658be72c4b42d3e1436b86ac4567ab914bfb451b"
  fuel-nailgun-agent_sha: "b2bb466fd5bd92da614cdbd819d6999c510ebfb1"
  astute_sha: "b81577a5b7857c4be8748492bae1dec2fa89b446"
  fuel-library_sha: "c2a335b5b725f1b994f78d4c78723d29fa44685a"
  fuel-ostf_sha: "3bc76a63a9e7d195ff34eadc29552f4235fa6c52"
  fuel-mirror_sha: "fb45b80d7bee5899d931f926e5c9512e2b442749"
  fuelmenu_sha: "78ffc73065a9674b707c081d128cb7eea611474f"
  shotgun_sha: "63645dea384a37dde5c01d4f8905566978e5d906"
  network-checker_sha: "a43cf96cd9532f10794dce736350bf5bed350e9d"
  fuel-upgrade_sha: "616a7490ec7199f69759e97e42f9b97dfc87e85b"
  fuelmain_sha: "d605bcbabf315382d56d0ce8143458be67c53434"

Additional information:
 No