use dockerhub image for nexus instead of producing our
own.   9081 is exposed in the host.
Issue-ID: POLICY-575
Change-Id: Ia72303507aee071e0f12e9a77b3ce03bae8b3ed7
Signed-off-by: Jorge Hernandez <jh1730@att.com>
 # SYSTEM software configuration
 
 POLICY_HOME=/opt/app/policy
-POLICY_LOGS=/var/log/ONAP/policy
+POLICY_LOGS=/var/log/onap/policy/pdpd
 JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64
 KEYSTORE_PASSWD=Pol1cy_0nap
 
 
       ports:
        - "3306:3306"
    nexus:
-      image: onap/policy-nexus
+      image: sonatype/nexus
       container_name: nexus
       hostname: nexus
+      restart: always
+      ports:
+       - "9081:8081"
    pap:
       image: onap/policy-pe
       environment:
        - mariadb
        - nexus
       hostname: drools
+      restart: always
       ports:
        - "6969:6969"
        - "9696:9696"