Tagged by CORD Jenkins version-tag job: 5134, for Gerrit patchset: 19243
[VOL-3142] Add config parameters to enable/disable tracing and set target jaeger agent for tracing data push

Also, added helper methods to assist correct Span creation by other Voltha code files.

Change-Id: Id6d312706d4c026aae02bb28f24ee2cae61e275b
3 files changed