[Bug 1621936] Re: Murano API service contains errors in log file after service start

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Title:
  Murano API service contains errors in log file after service start

Status in murano package in Ubuntu:
  New

Bug description:
  During murano-api service start you may observe errors in /var/log/murano/murano-api.log log file:
  """
  ...
  2016-09-09 16:31:37.631 24299 DEBUG murano.common.statservice [-] Updating statistic information. update_stats /usr/lib/python2.7/dist-packages/murano/common/statservice.py:59
  2016-09-09 16:31:37.631 24299 DEBUG murano.common.statservice [-] Stats object: <murano.api.v1.request_statistics.RequestStatisticsCollection object at 0x7fa9639de990> update_stats /usr/lib/python2.7/dist-packages/murano/common/statservice.py:60
  2016-09-09 16:31:37.631 24299 DEBUG murano.common.statservice [-] Stats: (Requests: 0  Errors: 0  Ave.Res.Time 0.0000
   Per tenant: {}) update_stats /usr/lib/python2.7/dist-packages/murano/common/statservice.py:66
  2016-09-09 16:31:37.698 24299 DEBUG oslo_db.sqlalchemy.engines [-] MySQL server mode set to STRICT_TRANS_TABLES,STRICT_ALL_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,TRADITIONAL,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION _check_effective_sql_mode /usr/lib/python2.7/dist-packages/oslo_db/sqlalchemy/engines.py:256
  2016-09-09 16:31:37.737 24299 ERROR murano.common.statservice [-] Failed to get statistics object from a database. 'module' object has no attribute 'NUM_CPUS'
  2016-09-09 16:31:37.737 24299 ERROR murano.common.statservice Traceback (most recent call last):
  2016-09-09 16:31:37.737 24299 ERROR murano.common.statservice   File "/usr/lib/python2.7/dist-packages/murano/common/statservice.py", line 75, in update_stats
  2016-09-09 16:31:37.737 24299 ERROR murano.common.statservice     psutil.NUM_CPUS,
  2016-09-09 16:31:37.737 24299 ERROR murano.common.statservice AttributeError: 'module' object has no attribute 'NUM_CPUS'
  2016-09-09 16:31:37.737 24299 ERROR murano.common.statservice
  ...
  """

  The issues shows itself because of a new version (3.4.2-1) of python-
  psutil package: http://packages.ubuntu.com/xenial/python-psutil

  The detailed instruction how to reproduce the issue was written by my manager (Igor Yozhikov):
  https://docs.google.com/document/d/1zf4WROMtd2Miq57WHDRRC7Qt-GZ6AIpQIlL2S3FT6Qo/view

  The fix was proposed/merged here:
  https://review.openstack.org/#/c/360727/

  Related bug:
  https://bugs.launchpad.net/murano/+bug/1598208

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