Opentelemetry NonApplicationEndpointSampler should consider http.root-path

[stefanorg]

Describe the bug

With open-telemetry extension installed and enabled, the default behaviour is to ignore non application uri suppress-non-application-uris: true

With the default sampler implementation at runtime we got aNonApplicationEndpointSampler instantiated.
The default implementation doesn't take in consideration the application context root

 @Override
    public SamplingResult shouldSample(Context parentContext, String traceId, String name, SpanKind spanKind,
            Attributes attributes, List<LinkData> parentLinks) {


// if context-root is myapplication, name will be myapplication/q/health/ready
// so this check will fail
        if (name.startsWith("q/") && spanKind == SpanKind.SERVER) {
            return NEGATIVE_SAMPLING_RESULT;
        }
        return root.shouldSample(parentContext, traceId, name, spanKind, attributes, parentLinks);
    }

Expected behavior

If my application context-root is myapplication every request under myapplication/q/* should be ignored by the sampler if suppress-non-application-uris is true

Actual behavior

Actually every check under myapplication/q/* get sampled.

How to Reproduce?

No response

Output of uname -a or ver

No response

Output of java -version

No response

GraalVM version (if different from Java)

No response

Quarkus version or git rev

No response

Build tool (ie. output of mvnw --version or gradlew --version)

No response

Additional information

No response

[quarkus-bot]

/cc @kenfinnigan

[gsmet]

@radcortez looks like one we could tackle easily and be done with?

[radcortez]

Yes, the plan is to implement that. OTel is going to offer an API to disable selected endpoints, but we need to move to their config API, which is missing a few things for us to use properly. I'm discussing this with the OTel community, so we can add what is missing.

[radcortez]

Thinking about this a little better, it may take a while for us to have OTel fully integrated to use their config for this. I'll probably just add it directly into Quarkus for now.