Fix always-true date comparison

Found via error-prone 2.3.3.
diff --git a/core/src/main/java/org/jclouds/util/Predicates2.java b/core/src/main/java/org/jclouds/util/Predicates2.java
index 84027de..d0c6487 100644
--- a/core/src/main/java/org/jclouds/util/Predicates2.java
+++ b/core/src/main/java/org/jclouds/util/Predicates2.java
@@ -176,7 +176,7 @@
        */
       @Deprecated
       protected boolean before(Date end) {
-         return new Date().compareTo(end) <= 1;
+         return new Date().compareTo(end) < 0;
       }
 
       /**