Merge remote-tracking branch 'origin/topic/seth/zeek_init'

* origin/topic/seth/zeek_init:
  Some more testing fixes.
  Update docs and tests for bro_(init|done) -> zeek_(init|done)
  Implement the zeek_init handler.

testing/btest/scripts/base/frameworks/sumstats/sample.zeek

@@ -1,7 +1,7 @@
 # @TEST-EXEC: bro %INPUT
 # @TEST-EXEC: btest-diff .stdout
 
-event bro_init() &priority=5
+event zeek_init() &priority=5
 	{
 	local r1: SumStats::Reducer = [$stream="test.metric", 
 	                               $apply=set(SumStats::SAMPLE), $num_samples=2];