[exporter/splunkhec] Reconnect on 502/429 errors

[atoulme]

Component(s)

exporter/splunkhec

Is your feature request related to a problem? Please describe.

When the exporter receives a 502 or 429 from a load balancer or cluster, it keeps using the same HTTP connection and may hit the same node as load balancers may use connection-based load balancing rather than per request.

Describe the solution you'd like

The exporter should have the option to disconnect and reconnect to the endpoint by closing explicitly the HTTP connection on any non successful status code, so that the load balancer can rebalance HTTP connections.

Describe alternatives you've considered

No response

Additional context

No response