Wire -Pjmh.includes and -PtestJvm into internal-api JMH config

[dougqh]

What This Does

Wires two previously-ignored Gradle properties into the internal-api JMH configuration:

• -Pjmh.includes=<pattern> — filters which benchmarks run. Previously silently ignored by the me.champeau.jmh plugin, requiring a full fat-jar build to run a single benchmark.
• -PtestJvm=<version> — selects the JVM used for benchmark execution. Previously ignored, defaulting to whatever JVM the Gradle daemon happened to use.

Usage:

./gradlew :internal-api:jmh -Pjmh.includes=AtomicsBenchmark -PtestJvm=17

Motivation

Running a single benchmark without this fix required building the full fat-jar and invoking it manually. The JVM defaulted to the daemon JVM rather than the requested version, making results non-reproducible across machines.

Additional Notes

The same pattern applies to other modules that use me.champeau.jmh (there are ~10 others). This PR fixes internal-api where current benchmark development is happening; other modules can adopt the pattern as needed.

tag: no release note

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[dd-octo-sts]

🟢 Java Benchmark SLOs — All performance SLOs passed

Suite	Status
Startup	🟢 pass

SLO thresholds are defined here based on automatically generated metrics. A warning is raised when results are within 5% of the threshold.

PR vs. master results

Scenario	Candidate	master	Δ (95% CI of mean)
startup:insecure-bank:iast:Agent	13.91 s	13.93 s	[-0.8%; +0.6%] (no difference)
startup:insecure-bank:tracing:Agent	12.83 s	12.98 s	[-1.8%; -0.5%] (maybe better)
startup:petclinic:appsec:Agent	16.94 s	16.69 s	[+0.7%; +2.4%] (maybe worse)
startup:petclinic:iast:Agent	16.84 s	17.01 s	[-1.9%; -0.1%] (maybe better)
startup:petclinic:profiling:Agent	16.91 s	16.80 s	[-0.4%; +1.7%] (no difference)
startup:petclinic:sca:Agent	16.94 s	16.67 s	[+0.6%; +2.6%] (maybe worse)
startup:petclinic:tracing:Agent	16.05 s	16.26 s	[-2.4%; -0.1%] (maybe better)

Commit: 2845c650 · CI Pipeline · Benchmarking Platform UI

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Load and DaCapo benchmarks can be triggered manually in the GitLab pipeline. Results will appear in the Benchmarking Platform UI after completion.