Issue 126: Prepare for 0.13 release (#127)

Set the Pravega and Pravega Keycloak versions to 0.13.0.

Signed-off-by: Raúl Gracia <raul.gracia@emc.com>

Author: RaulGracia

gradle.properties

@@ -12,6 +12,6 @@ commonsCLIVersion=1.3.1
 commonsCSVVersion=1.5
 commonsMathVersion=3.6.1
 commonsIOVersion=1.3.2
-pravegaVersion=0.11.0-3038.fc1f5c3-SNAPSHOT
-pravegaKeycloakVersion=0.10.1
+pravegaVersion=0.13.0
+pravegaKeycloakVersion=0.13.0
 slf4jSimpleVersion=1.7.14