chore(package): update mocha to version 3.5.2
chore(package): update mocha to version 3.5.2

Closes #922
ManageIQ/manageiq-ui-self_service,AllenBW/manageiq-ui-service,ManageIQ/manageiq-ui-service,AllenBW/manageiq-ui-service,ManageIQ/manageiq-ui-self_service,AllenBW/manageiq-ui-service,AllenBW/manageiq-ui-service,ManageIQ/manageiq-ui-service,ManageIQ/manageiq-ui-self_service,ManageIQ/manageiq-ui-service