[swarm][7.0] Backup-restore tests fails on check md5sum

[Vadim Rovachev]

Traceback (most recent call last):
  File "/usr/lib/python2.7/unittest/case.py", line 331, in run
    testMethod()
  File "/usr/lib/python2.7/unittest/case.py", line 1043, in runTest
    self._testFunc()
  File "/home/jenkins/qa-venv-7.0/local/lib/python2.7/site-packages/proboscis/case.py", line 296, in testng_method_mistake_capture_func
    compatability.capture_type_error(s_func)
  File "/home/jenkins/qa-venv-7.0/local/lib/python2.7/site-packages/proboscis/compatability/exceptions_2_6.py", line 27, in capture_type_error
    func()
  File "/home/jenkins/qa-venv-7.0/local/lib/python2.7/site-packages/proboscis/case.py", line 350, in func
    func(test_case.state.get_state())
  File "/home/jenkins/workspace/7.0.system_test.ubuntu.backup_restore_master/fuelweb_test/helpers/decorators.py", line 80, in wrapper
    result = func(*args, **kwargs)
  File "/home/jenkins/workspace/7.0.system_test.ubuntu.backup_restore_master/fuelweb_test/tests/test_backup_restore.py", line 133, in ha_one_controller_backup_restore
    checkers.restore_check_sum(remote)
  File "/home/jenkins/workspace/7.0.system_test.ubuntu.backup_restore_master/fuelweb_test/__init__.py", line 58, in wrapped
    result = func(*args, **kwargs)
  File "/home/jenkins/workspace/7.0.system_test.ubuntu.backup_restore_master/fuelweb_test/helpers/checkers.py", line 405, in restore_check_sum
    format(md5sum_backup, md5sum_restore))
  File "/home/jenkins/qa-venv-7.0/local/lib/python2.7/site-packages/proboscis/asserts.py", line 55, in assert_equal
    raise ASSERTION_ERROR(message)
AssertionError: md5sums not equal: backupExecResult(
 cmd=cat /etc/fuel/sum,
  stdout=
'5e16b9f9431711c5adccaac7c80e2c15',
 stderr=
'',
 exit_code=0
), restoreExecResult(
 cmd=md5sum /etc/fuel/data | sed -n 1p | awk '{print $1}',
  stdout=
'5e16b9f9431711c5adccaac7c80e2c15',
 stderr=
'',
 exit_code=0
)