Jaeger: no http client

[VendettaReborn]

when enabling jaeger via "JAGER_ENDPOINT", i encountered the error:
failed to setup logging: Exporter otlp encountered the following error(s): no http client, you must select one from features or provide your own implementation

it seems that otlp_exporter missed the calling of with_http_client, there are two ways of fixing this:

1. use grpc client instead of http client (tonic has already been a dependency in other places, so won't lead to extra imports)
2. add deps of opentelemetry_http, create a client and pass it to with_http_client

the former one is simplier, but the jaeger's startup command has to be changed into:
docker run -d -p16686:16686 -p4317:4317 -p4318:4318 -e COLLECTOR_OTLP_ENABLED=true jaegertracing/all-in-one:latest to use the grpc port 4317 (so the docs should also be updated)

[ibigbug]

Yeah it's a known issue. open-telemetry/opentelemetry-rust#1659 (comment)

Maybe time to move to the grpc transport.