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/protocols/irc/basic.test

@@ -1,11 +1,15 @@
 # This tests that basic IRC commands (NICK, USER, JOIN, DCC SEND)
 # are logged for a client.
 
-# @TEST-EXEC: zeek -r $TRACES/irc-dcc-send.trace %INPUT >out
+# @TEST-EXEC: zeek -b -r $TRACES/irc-dcc-send.trace %INPUT >out
 # @TEST-EXEC: btest-diff irc.log
 # @TEST-EXEC: btest-diff conn.log
 # @TEST-EXEC: btest-diff out
 
+@load base/protocols/conn
+@load base/protocols/irc
+@load base/frameworks/dpd
+
 # dcc mime types are irrelevant to this test, so filter it out
 event zeek_init()
 	{