Query with different time format does not work if database is not specified.

Nadie ha tomado este issue todavía.

If you do not specify database in query (even thou you have specified database on the client level) method InfluxDBl#query(Query, TimeUnit) will not return any result because it will not send database information.

Steps to reproduce:

```java
InfluxDB influxDB = InfluxDBFactory.connect(host + ":" + port);
influxDB.setDatabase(database);
// queryResult will be empty.
QueryResult queryResult = influxDB.query(new Query("..."), TimeUnit.NANOSECONDS)
```

Quick fix:
```java
InfluxDB influxDB = InfluxDBFactory.connect(host + ":" + port);
influxDB.setDatabase(database);
// queryResult will be empty.
QueryResult queryResult = influxDB.query(new Query("...", "database"), TimeUnit.NANOSECONDS)
```

Permanent fix:
Change into "InfluxDBImpl#query(Query, TimeUnit)" into:
```java
public QueryResult query(final Query query, final TimeUnit timeUnit) {
String db = query.getDatabase();
if (db == null) {
db = this.database;
}
Call call = null;
if (query instanceof BoundParameterQuery) {
BoundParameterQuery boundParameterQuery = (BoundParameterQuery) query;
call = this.influxDBService.query(db,
TimeUtil.toTimePrecision(timeUnit), query.getCommandWithUrlEncoded(),
boundParameterQuery.getParameterJsonWithUrlEncoded());
} else {
call = this.influxDBService.query(db,
TimeUtil.toTimePrecision(timeUnit), query.getCommandWithUrlEncoded());
}
return executeQuery(call);
}
```
Here database information is taken from client level if not given in query object.

Comienza en InfluxDBImpl#query(Query, TimeUnit) e inspecciona cómo se pasan Query.getDatabase() y la base de datos configurada a nivel del cliente a influxDBService.query. Verifica el comportamiento tanto de Query normal como de BoundParameterQuery. Se considera completado cuando una query sin su propia base de datos utiliza la base de datos configurada en el cliente y devuelve resultados con la precisión temporal solicitada.

Escrito por el modelo de indexación a partir del texto del issue.