Guru meditation report in swift.

When things go wrong in (production) deployments of OpenStack collecting debug data is a key first step in the process of triaging & ultimately resolving the problem. Nova has extensively used logging capabilities which produce a vast amount of data. This does not, however, enable an admin to obtain an accurate view on the current live state of the system. The Guru Meditation Reports address this by providing information on current green threads, native threads, config parameters & more, upon receipt of SIGUSR1.