client settings: actor names with "." crashes xbus-client
Created originally on Bitbucket by cdevienne (Christophe de Vienne)
Since 3.0.0-rc.1 we can use the actor name as key in the "actors" dictionary (see https://docs.xbus.io/latest/migration.html#simplify).
If an actor name contains a ".", xbus-client crashed when loading the configuration file. The workaround is to switch back to the old way: use a integer as the key.