Enhance toString methods in factory classes

The factory classes in policy-endpoints have toString() methods that
return "[]" for their list contents.  Updated the code to provide a list
of the keys rather than just an empty list.
Also replaced some toString() methods with lombok.
Also replace StringBuilder with concatenation in some cases.

Issue-ID: POLICY-3298
Change-Id: I64fca21a4b009f7e09fcc482b5d156753fb7e680
Signed-off-by: Jim Hahn <jrh3@att.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/policy-endpoints/src/main/java/org/onap/policy/common/endpoints/event/comm/bus/IndexedUebTopicSourceFactory.java b/policy-endpoints/src/main/java/org/onap/policy/common/endpoints/event/comm/bus/IndexedUebTopicSourceFactory.java
index edaf4736..09500978 100644
--- a/policy-endpoints/src/main/java/org/onap/policy/common/endpoints/event/comm/bus/IndexedUebTopicSourceFactory.java
+++ b/policy-endpoints/src/main/java/org/onap/policy/common/endpoints/event/comm/bus/IndexedUebTopicSourceFactory.java
@@ -211,6 +211,6 @@ class IndexedUebTopicSourceFactory implements UebTopicSourceFactory {
 
     @Override
     public String toString() {
-        return "IndexedUebTopicSourceFactory []";
+        return "IndexedUebTopicSourceFactory " + uebTopicSources.keySet();
     }
 }