General btest cleanup

- Use `-b` most everywhere, it will save time.

- Start some intel tests upon the input file being fully read instead of
  at an arbitrary time.

- Improve termination condition for some sumstats/cluster tests.

- Filter uninteresting output from some supervisor tests.

- Test for `notice_policy.log` is no longer needed.

testing/btest/scripts/base/files/data_event/basic.zeek

@@ -1,9 +1,11 @@
 # Just a very basic test to check if ANALYZER_DATA_EVENT works.
 # Also check if "in" works with binary data.
-# @TEST-EXEC: zeek -r $TRACES/pe/pe.trace %INPUT
+# @TEST-EXEC: zeek -b -r $TRACES/pe/pe.trace %INPUT
 # @TEST-EXEC: btest-diff .stdout
 # @TEST-EXEC: btest-diff .stderr
 
+@load base/protocols/ftp
+
 event stream_data(f: fa_file, data: string)
 	{
 	if ( "Windows" in data )