[GSS](7.3.z) EJBCLIENT-386 - discovery.blacklist.timeout getBlacklist check is incorrect

 74 public final class DiscoveryEJBClientInterceptor implements EJBClientInterceptor {

 91     private static final long BLACKLIST_TIMEOUT =
 92             AccessController.doPrivileged((PrivilegedAction<Long>) () -> {
 93                 String val = System.getProperty("org.jboss.ejb.client.discovery.blacklist.timeout");
 94                 try {
 95                     return TimeUnit.MILLISECONDS.toNanos(Long.valueOf(val));
 96                 } catch (NumberFormatException e) {
 97                     return TimeUnit.MILLISECONDS.toNanos(5000L);
 98                 }
 99             });

311     static boolean isBlackListed(AbstractInvocationContext context, URI destination) {
312         final Set<URI> invocationBlacklist = context.getAttachment(BL_KEY);
313         if (invocationBlacklist != null && invocationBlacklist.contains(destination)) {
314             return true;
315         }
316         if (!blacklist.containsKey(destination)) {
317             return false;
318         }
319         final long blacklistedTimestamp = blacklist.get(destination);
320         final long delta = System.nanoTime() - blacklistedTimestamp;
321         if (delta < BLACKLIST_TIMEOUT) {
322             return true;
323         } else {
324             blacklist.remove(destination);
325             return false;
326         }
327     }
328 
329     private static Set<URI> getBlacklist(){
330         blacklist.entrySet().removeIf(e ->
331         {
332             final long delta = System.nanoTime() - e.getValue();
333             return delta < BLACKLIST_TIMEOUT;
334         });
335         return blacklist.keySet();
336     }