Allow for redundancy in URI

[widhalmt]

Expected Behavior

• Switch to another Elasticsearch instance if the current instance is unreachable

Current Behavior

• There can only be one instance given in the configuration. So there's no possibility to failover or fail back

Possible Solution

• Allow for multiple URIs to be given in the configuration and build failover functionality

Context

• This is no mandatory or breaking feature but it would improve usability especially with bigger clusters and during maintenance

Your Environment

This applies to every environment.