More ONOS-1612 - Fix NPEs if compenent lookup fails

Change-Id: Icc881cc79e75b7c44bcaa925b266396a93b60dbe
diff --git a/cli/src/main/java/org/onosproject/cli/cfg/ComponentConfigCommand.java b/cli/src/main/java/org/onosproject/cli/cfg/ComponentConfigCommand.java
index b1e5150..e580503 100644
--- a/cli/src/main/java/org/onosproject/cli/cfg/ComponentConfigCommand.java
+++ b/cli/src/main/java/org/onosproject/cli/cfg/ComponentConfigCommand.java
@@ -107,6 +107,11 @@
 
     private void listComponentProperty(String component, String name) {
         Set<ConfigProperty> props = service.getProperties(component);
+
+        if (props == null) {
+            return;
+        }
+
         Optional<ConfigProperty> property = props.stream()
                 .filter(p -> p.name().equals(name)).findFirst();
         if (!property.isPresent()) {