Fix docker-stage lifecycle phase

Missing the -D so the job is failing.

Issue-ID: POLICY-2378
Change-Id: I1108f339ad25fa39c760adec16b70db3733f8e4d
Signed-off-by: Pamela Dragosh <pdragosh@research.att.com>
diff --git a/jjb/policy/policy-apex-pdp.yaml b/jjb/policy/policy-apex-pdp.yaml
index 776133d..34a7a64 100644
--- a/jjb/policy/policy-apex-pdp.yaml
+++ b/jjb/policy/policy-apex-pdp.yaml
@@ -21,7 +21,7 @@
       - gerrit-maven-docker-stage:
           build-node: ubuntu1804-docker-8c-8g
           maven-versions-plugin: true
-          mvn-params: '-P docker maven.test.skip=true'
+          mvn-params: '-P docker -Dmaven.test.skip=true'
           container-public-registry: 'nexus3.onap.org:10001'
           container-staging-registry: 'nexus3.onap.org:10003'
       - '{project-name}-gerrit-release-jobs':