[pulse][taint][report] Report new taint sources/sinks to JSON
[pulse][taint][report] Report new taint sources/sinks to JSON

Summary:
Populate new source/sink tags in the `jsonbug` type with taint
source/sink procedure names when a flow from a taint source or to a
taint sink is diagnosed.
This should permit straightforward querying of all the flows out of/in to
a given source/sink (respectively).

Reviewed By: dulmarod

Differential Revision: D36640838

fbshipit-source-id: a9c1f88ec8ea2dcb527211348c1197edb440122b

facebook/infer,facebook/infer,facebook/infer,facebook/infer,facebook/infer,facebook/infer,facebook/infer