Converting log writers and input readers to plugins.
Merge branch 'topic/robin/dynamic-plugins-2.3' into topic/robin/reader-writer-plugins
Merge remote-tracking branch 'origin/master' into topic/robin/reader-writer-plugins
Final fixes, preparing for merge.
Test case for a dynamic log writer.
Test case for a dynamic input reader.
Merge remote-tracking branch 'origin/master' into topic/robin/reader-writer-plugins
More polishing.
More polishing of some of the branche's changes.
Move DataSeries and ElasticSearch into plugins.
Updating submodule.
Merge remote-tracking branch 'origin/master' into topic/robin/reader-writer-plugins
Merge branch 'topic/robin/reader-writer-plugins' of git.bro.org:bro into topic/robin/reader-writer-plugins

Conflicts:
	scripts/base/frameworks/logging/writers/dataseries.bro
Removing DataSeries and ElasticSearch from configure script.
Fixing tests.
Adding plugin testing to Makefile's test-all.
Merge remote-tracking branch 'origin/topic/robin/reader-writer-plugins'

* origin/topic/robin/reader-writer-plugins:
  Adding plugin testing to Makefile's test-all.
  Fixing tests.
  Removing DataSeries and ElasticSearch from configure script.
  Updating submodule.
  Move DataSeries and ElasticSearch into plugins.
  More polishing of some of the branche's changes.
  More polishing.
  Test case for a dynamic input reader.
  Test case for a dynamic log writer.
  Final fixes, preparing for merge.
  Converting log writers and input readers to plugins.

BIT-1222 #merged