Setting the log.ctx manually is not needed anymore and it's actually
harmful since all palces where it was used, a log.Origin already in path
was being passed, causing a origin loop.
Change-Id: I0511b9f7bc59e3c7f2269ff3155d0c95db58d063
smpplib modules are used in several places, so it's not enough to import
them in the constructor since they are only imported for the function
scope.
Change-Id: I6511e28c7ef6aa86e85a7e03aa10a67d87896588
Pau Espin