This commit adds a heat metadata collection.
I am working on refactoring browbeat metadata in general, but
by the time I got into that this was already ready. After
a day working on refactoring metadata I've determined it's
not going to be done super quickly so I may as well
get this off my drive where someone can use it.
**update**
Corrected stdout issue where entire JSON was stored
as metadata instead of just stdout
Change-Id: I2b62ccc0ddaba4965d393c021de50d953db5d6f9
33dc84948a