[POLICY] Update RC0 released versions

apex image:                  onap/policy-apex-pdp:2.5.1
api image:                   onap/policy-api:2.4.1
distribution image:          onap/policy-distribution:2.5.1
pdpd-cl image:               onap/policy-pdpd-cl:1.8.1
pap image:                   onap/policy-pap:2.4.1
xacml-pdp image:             onap/policy-xacml-pdp:2.4.1
policy-clamp-backend  image: onap/policy-clamp-backend:6.0.2
policy-clamp-frontend image: onap/policy-clamp-frontend:6.0.2

Issue-ID: POLICY-3127
Signed-off-by: jhh <jorge.hernandez-herrero@att.com>
Change-Id: I1381c9f310adb0b310262cd242ed4883388fcbc3
Signed-off-by: jhh <jorge.hernandez-herrero@att.com>
diff --git a/kubernetes/policy/components/policy-apex-pdp/values.yaml b/kubernetes/policy/components/policy-apex-pdp/values.yaml
index fb4742e..22edcff 100755
--- a/kubernetes/policy/components/policy-apex-pdp/values.yaml
+++ b/kubernetes/policy/components/policy-apex-pdp/values.yaml
@@ -49,7 +49,7 @@
 # Application configuration defaults.
 #################################################################
 # application image
-image: onap/policy-apex-pdp:2.5.0
+image: onap/policy-apex-pdp:2.5.2
 pullPolicy: Always
 
 # flag to enable debugging - application support required