test: add ApiaryGlueSync deployment smoke test

[jamespfaulkner]

Summary

• Adds ApiaryGlueSyncMetricsIntegrationTest, a @SpringBootTest smoke test that validates
  apiary-gluesync-listener deploys correctly inside a Dronefly Spring Boot context.
• Bumps kafka-metastore-listener and apiary-gluesync-listener to 8.1.18 in the
  integration-tests POM, adding the :all (fat jar) classifier for gluesync.
• Adds SerDeInfo to DroneFlyIntegrationTestUtils.buildTable() to avoid an NPE in
  GlueSync's HiveToGlueTransformer.

Why this test lives here

apiary-gluesync-listener cannot test its own behaviour inside a Dronefly Spring Boot
context without depending on drone-fly, which would create a circular dependency.
The test guards two things specific to the Dronefly deployment model:

1. Classpath integrity — the :all fat jar (shaded AWS SDK + Dropwizard Metrics) loads
   without conflicts alongside Dronefly's own dependencies.
2. Bean-ordering invariant — Spring Boot registers PrometheusMeterRegistry in
   Metrics.globalRegistry before ApiaryGlueSync is constructed. If that ordering
   were wrong, ApiaryGlueSync.MetricService silently falls back to adding a
   JmxMeterRegistry and metrics never reach Prometheus.

Test plan

• mvn -pl drone-fly-integration-tests -Dtest=ApiaryGlueSyncMetricsIntegrationTest test passes locally
• CI green

🤖 Generated with Claude Code