S3P: added FileSystemReceptionHandler plugin

For S3P test, we need to add a new FileSystemRecpetionHandler plugin
which monitors a local directory for newly come csar files.

This patch added the plugin code as well as the configuration file for
s3p to use.

Change-Id: I8f1e65489abde15ae32c54d819bbc6e7cbdf36d0
Issue-ID: POLICY-837
Signed-off-by: Lianhao Lu <lianhao.lu@intel.com>
diff --git a/packages/policy-distribution-docker/src/main/docker/policy-dist.sh b/packages/policy-distribution-docker/src/main/docker/policy-dist.sh
index a6366c0..ebb6b8d 100644
--- a/packages/policy-distribution-docker/src/main/docker/policy-dist.sh
+++ b/packages/policy-distribution-docker/src/main/docker/policy-dist.sh
@@ -22,10 +22,17 @@
 JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64/
 POLICY_DISTRIBUTION_HOME=/opt/app/policy/distribution
 
-CONFIG_FILE=$1
+if [ "$#" -eq 1 ]; then
+    CONFIG_FILE=$1
+else
+    CONFIG_FILE=${CONFIG_FILE}
+fi
+
 if [ -z "$CONFIG_FILE" ]
   then
-    CONFIG_FILE=$POLICY_DISTRIBUTION_HOME/etc/defaultConfig.json
+    CONFIG_FILE="$POLICY_DISTRIBUTION_HOME/etc/defaultConfig.json"
 fi
 
+echo "Policy distribution config file: $CONFIG_FILE"
+
 $JAVA_HOME/bin/java -cp "$POLICY_DISTRIBUTION_HOME/etc:$POLICY_DISTRIBUTION_HOME/lib/*" org.onap.policy.distribution.main.startstop.Main -c $CONFIG_FILE