This commit consists of:
1) Fixing the core tests
2) Fix an error in the logger where the runtime stack trace behaved
differently in go 1.10 vs go 1.9.
3) Minor other fixes

Change-Id: I1263df38ffcd733174f776a0901583cfb59c616e
diff --git a/rw_core/main.go b/rw_core/main.go
index b73f131..25adee6 100644
--- a/rw_core/main.go
+++ b/rw_core/main.go
@@ -45,7 +45,7 @@
 }
 
 func init() {
-	log.AddPackage(log.JSON, log.WarnLevel, nil)
+	log.AddPackage(log.JSON, log.DebugLevel, nil)
 }
 
 func newKVClient(storeType string, address string, timeout int) (kvstore.Client, error) {