Bump xacml-pdp master to 2.4.0-SNAPSHOT

Bumping minor version now that guilin branch has been created.
Also repointed to snapshot versions for dependencies.

Issue-ID: POLICY-2875
Change-Id: I145f638d6409f92cf916b08ace10a159d5e52c73
Signed-off-by: Jim Hahn <jrh3@att.com>
diff --git a/xacml-test/pom.xml b/xacml-test/pom.xml
index e7a6494..61440c7 100644
--- a/xacml-test/pom.xml
+++ b/xacml-test/pom.xml
@@ -26,7 +26,7 @@
     <parent>
         <groupId>org.onap.policy.xacml-pdp</groupId>
         <artifactId>policy-xacml-pdp</artifactId>
-        <version>2.3.4-SNAPSHOT</version>
+        <version>2.4.0-SNAPSHOT</version>
         <relativePath>..</relativePath>
     </parent>