[fix][broker] Fix MultiRolesTokenAuthorizationProvider authorize issue.

[Technoboy-]

Motivation

Method authorize using the common pool thread and has a sync call :

pulsar/pulsar-broker-common/src/main/java/org/apache/pulsar/broker/authorization/MultiRolesTokenAuthorizationProvider.java

Lines 137 to 161 in afc48e6

	return CompletableFuture.supplyAsync(() -> {
	do {
	try {
	List<CompletableFuture<Boolean>> doneFutures = new ArrayList<>();
	FutureUtil.waitForAny(futures).get();
	for (CompletableFuture<Boolean> future : futures) {
	if (!future.isDone()) {
	continue;
	}
	doneFutures.add(future);
	if (future.get()) {
	futures.forEach(f -> {
	if (!f.isDone()) {
	f.cancel(false);
	}
	});
	return true;
	}
	}
	futures.removeAll(doneFutures);
	} catch (InterruptedException | ExecutionException ignored) {
	}
	} while (!futures.isEmpty());
	return false;
	});

And if line-141 has an exception, the future could not complete.

Documentation

• no-need-doc
  (Please explain why)

[RobertIndie]

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