Updates for operator based configurations.

Added update to parse and load operator JWTs.
Changed to add in signing keys from operator JWT to list of trusted keys.
Added URL account resolver.
Added account claim updates by system messages.

Signed-off-by: Derek Collison <derek@nats.io>

test/test.go

@@ -53,9 +53,9 @@ func RunServer(opts *server.Options) *server.Server {
 	if opts == nil {
 		opts = &DefaultTestOptions
 	}
-	s := server.New(opts)
-	if s == nil {
-		panic("No NATS Server object returned.")
+	s, err := server.NewServer(opts)
+	if err != nil || s == nil {
+		panic(fmt.Sprintf("No NATS Server object returned: %v", err))
 	}
 
 	// Run server in Go routine.