Revert "Upgrade Kryo to 3.0.3."

Problems in distributed environment

This reverts commit aa20d61c303be21f8cc1c015601f1e63f76e54a0.

Change-Id: I9f94927edb769afb2c7576a34e017cd77c7af730
diff --git a/pom.xml b/pom.xml
index 1fdaa8b..d0ca544 100644
--- a/pom.xml
+++ b/pom.xml
@@ -308,7 +308,7 @@
             <dependency>
                 <groupId>com.esotericsoftware</groupId>
                 <artifactId>kryo</artifactId>
-                <version>3.0.3</version>
+                <version>3.0.0</version>
             </dependency>
             <dependency>
                 <groupId>com.esotericsoftware</groupId>