More verbose error message for redis connection failure (#479) (#480)

Signed-off-by: Lily Sturmann <lsturman@redhat.com>

pkg/api/api.go

@@ -162,7 +162,7 @@ func ConfigureAPI() {
 	if viper.GetBool("enable_retrieve_api") {
 		redisClient, err = cfg.New(context.Background(), "tcp", fmt.Sprintf("%v:%v", viper.GetString("redis_server.address"), viper.GetUint64("redis_server.port")))
 		if err != nil {
-			log.Logger.Panic(err)
+			log.Logger.Panic("failure connecting to redis instance: ", err)
 		}
 	}