profiles/internal/rpc: more verror conversions and tests.

MultiPart: 2/2

Change-Id: Id0e77e55764b6df0116566ff5052b2056c418b40
diff --git a/test/testutil/dispatcher.go b/test/testutil/dispatcher.go
index 737a390..671f4d6 100644
--- a/test/testutil/dispatcher.go
+++ b/test/testutil/dispatcher.go
@@ -7,6 +7,7 @@
 import (
 	"v.io/v23/rpc"
 	"v.io/v23/security"
+	"v.io/v23/verror"
 )
 
 // LeafDispatcher returns a dispatcher for a single object obj, using
@@ -23,7 +24,7 @@
 
 func (d leafDispatcher) Lookup(suffix string) (interface{}, security.Authorizer, error) {
 	if suffix != "" {
-		return nil, nil, rpc.NewErrUnknownSuffix(nil, suffix)
+		return nil, nil, verror.New(verror.ErrUnknownSuffix, nil, suffix)
 	}
 	return d.invoker, d.auth, nil
 }