Issue 244: Prepare for 0.4.0 release (#245)

Update the Pravega and KeyCloak version to 0.11.0. Also, upgraded Zookeeper version due to dependency conflict.

Signed-off-by: Raúl Gracia <[email protected]>

gradle.properties

@@ -49,9 +49,9 @@ avroVersion=1.11.0
 avroProtobufVersion=1.10.2
 snappyVersion=1.1.7.3
 javaxActivationVersion=1.1.1
-pravegaVersion=0.10.1
-pravegaKeyCloakVersion=0.10.1
-apacheZookeeperVersion=3.5.9
+pravegaVersion=0.11.0
+pravegaKeyCloakVersion=0.11.0
+apacheZookeeperVersion=3.6.3
 
 # Version and base tags can be overridden at build time
 schemaregistryVersion=0.4.0-SNAPSHOT