ParsingQueue: Save failed parsing-tasks

Let createAndSchedule... methods in EiffelEventParser throw an
exception upon failure instead of logging. This will make
EiffelEventParserQueue aware of whether the queued task succeeded or
not so that it can store failed tasks to retry at a later date.

Solves: Jira GER-1730
Change-Id: I130fbb53712474b6734ced73d0448d0e387c02f4
6 files changed
tree: 1230a16cc08f9f1f1673e5b0d9eb884a0ea78c30
  1. src/
  2. BUILD
  3. external_plugin_deps.bzl