Finished release 0.12.

Changelog.md

Jenkinsfile

brian_polling_manager/error_report/cli.py

brian_polling_manager/interface_stats/vendors/common.py

brian_polling_manager/interface_stats/vendors/nokia.py

setup.py

test/error_report/test_error_report.py

test/interface_stats/test_nokia.py

tox.ini