Add discovery.speaker-failure-timeout int wfm properties
Add discovery.speaker-failure-timeout int wfm properties

This property wasn't added into test's properties in
https://github.com/telstra/open-kilda/pull/263

nikitamarchenko/open-kilda,carmine/open-kilda,telstra/open-kilda,telstra/open-kilda,telstra/open-kilda,nikitamarchenko/open-kilda,jonvestal/open-kilda,jonvestal/open-kilda,jonvestal/open-kilda,nikitamarchenko/open-kilda,telstra/open-kilda,telstra/open-kilda,telstra/open-kilda,nikitamarchenko/open-kilda,carmine/open-kilda,carmine/open-kilda,jonvestal/open-kilda,carmine/open-kilda,carmine/open-kilda,telstra/open-kilda,jonvestal/open-kilda,nikitamarchenko/open-kilda,nikitamarchenko/open-kilda,carmine/open-kilda