Input framework unit test adjustments.

- Generally increased the time allowed before they timeout.

- For tests w/ a clear termination condition (most of them), made
  timeouts result in a test failure.

- Seemed to be a race in some cases between tests generating output and
  the input reader stream getting removed/closed, so moved stream removal
  closer to termination time, when all output should be available.

testing/btest/scripts/base/frameworks/input/binary.bro

@@ -1,5 +1,5 @@
 # @TEST-EXEC: btest-bg-run bro bro -b %INPUT
-# @TEST-EXEC: btest-bg-wait -k 5
+# @TEST-EXEC: btest-bg-wait 10
 # @TEST-EXEC: btest-diff out
 
 redef exit_only_after_terminate = T;
@@ -39,6 +39,7 @@ event line(description: Input::EventDescription, tpe: Input::Event, a: string, b
 	try = try + 1;
 	if ( try == 3 )
 		{
+		Input::remove("input");
 		close(outfile);
 		terminate();
 		}
@@ -49,5 +50,4 @@ event bro_init()
 	try = 0;
 	outfile = open("../out");
 	Input::add_event([$source="../input.log", $name="input", $fields=Val, $ev=line, $want_record=F]);
-	Input::remove("input");
 	}