Set root span status to error too

Signed-off-by: Yuri Shkuro <github@ysh.us>

Use OTEL Exporter instead of Jaeger Exporter (#18)

I have used the otel exporter instead of the jaeger exporter.
Also ran `go get -d -t ./...` and `go mod tidy` and fixed errors caused
by it.

Use the `OTEL_EXPORTER_OTLP_TRACES_ENDPOINT`
```bash
export OTEL_EXPORTER_OTLP_TRACES_ENDPOINT=http://localhost:14268/api/traces
```

---------

Signed-off-by: FlamingSaint <raghuramkannan400@gmail.com>
Signed-off-by: Yuri Shkuro <github@ysh.us>
Co-authored-by: Yuri Shkuro <github@ysh.us>

Fix version ref

Signed-off-by: Yuri Shkuro <github@ysh.us>

Capture name of the test config in the root span tag

Allow configuring Jaeger address

Clean-up dependencies

Allow workers to sleep between requests