Revert "Uses MockWebServer instead of a docker container for integration tests"

[codefromthecrypt]

What does this PR do?

This reverts commit cd893419137fd80981505c754ecea5cce6fb0bbd.

This breaks JBoss startup somehow in non-obvious ways. See #3684

Fastest way to reproduce by using JBossIT with registry.access.redhat.com/jboss-eap-7/eap72-openshift

--snip--
2024-06-18 18:01:41,148 [docker-java-stream-922282997] INFO  co.elastic.apm.agent.test.AgentTestContainer - STDOUT: 2024-06-18 10:01:41,155 [main] DEBUG co.elastic.apm.agent.jmx.JmxMetricTracker$JmxMetricRegistration - Registering JMX metric java.lang:type=Memory HeapMemoryUsage.max as metric_name: jvm.jmx.test_heap_metric.max labels: type=Memory
2024-06-18 18:01:41,151 [docker-java-stream-922282997] INFO  co.elastic.apm.agent.test.AgentTestContainer - STDOUT: 2024-06-18 10:01:41,158 [main] DEBUG co.elastic.apm.agent.jmx.JmxMetricTracker$JmxMetricRegistration - Registering JMX metric java.lang:type=Memory HeapMemoryUsage.used as metric_name: jvm.jmx.test_heap_metric.used labels: type=Memory
2024-06-18 18:01:41,262 [docker-java-stream-922282997] INFO  co.elastic.apm.agent.test.AgentTestContainer - STDOUT: 2024-06-18 10:01:41,268 [main] DEBUG co.elastic.apm.agent.bci.ElasticApmAgent - Type match for instrumentation JBossLoggingCorrelationInstrumentation: (name(equals(org.jboss.logging.JDKLogger)) or name(equals(org.jboss.logging.JBossLogManagerLogger))) matches class org.jboss.logging.JBossLogManagerLogger
2024-06-18 18:01:41,271 [docker-java-stream-922282997] INFO  co.elastic.apm.agent.test.AgentTestContainer - STDOUT: 2024-06-18 10:01:41,277 [main] DEBUG co.elastic.apm.agent.bci.ElasticApmAgent - Method match for instrumentation JBossLoggingCorrelationInstrumentation: ((name(equals(doLog)) or name(equals(doLogf))) and not(isAbstract())) matches protected void org.jboss.logging.JBossLogManagerLogger.doLog(org.jboss.logging.Logger$Level,java.lang.String,java.lang.Object,java.lang.Object[],java.lang.Throwable)
2024-06-18 18:01:41,274 [docker-java-stream-922282997] INFO  co.elastic.apm.agent.test.AgentTestContainer - STDOUT: 2024-06-18 10:01:41,281 [main] DEBUG co.elastic.apm.agent.bci.ElasticApmAgent - Method match for instrumentation JBossLoggingCorrelationInstrumentation: ((name(equals(doLog)) or name(equals(doLogf))) and not(isAbstract())) matches protected void org.jboss.logging.JBossLogManagerLogger.doLogf(org.jboss.logging.Logger$Level,java.lang.String,java.lang.String,java.lang.Object[],java.lang.Throwable)
2024-06-18 18:01:41,283 [docker-java-stream-922282997] INFO  co.elastic.apm.agent.test.AgentTestContainer - STDERR: WFLYSRV0073: Invalid option '172.19.0.2'
2024-06-18 18:01:41,355 [docker-java-stream-922282997] INFO  co.elastic.apm.agent.test.AgentTestContainer - STDOUT: 
2024-06-18 18:01:41,355 [docker-java-stream-922282997] INFO  co.elastic.apm.agent.test.AgentTestContainer - STDOUT: Usage: standalone.sh [args...]

Checklist

• [ ] This is an enhancement of existing features, or a new feature in existing plugins
  • [ ] I have updated CHANGELOG.asciidoc
  • [ ] I have added tests that prove my fix is effective or that my feature works
  • [ ] Added an API method or config option? Document in which version this will be introduced
  • [ ] I have made corresponding changes to the documentation
• [ ] This is a bugfix
  • [ ] I have updated CHANGELOG.asciidoc
  • [ ] I have added tests that would fail without this fix
• [ ] This is a new plugin
  • [ ] I have updated CHANGELOG.asciidoc
  • [ ] My code follows the style guidelines of this project
  • [ ] I have made corresponding changes to the documentation
  • [ ] I have added tests that prove my fix is effective or that my feature works
  • [ ] New and existing unit tests pass locally with my changes
  • [ ] I have updated supported-technologies.asciidoc
  • [ ] Added an API method or config option? Document in which version this will be introduced
  • [ ] Added an instrumentation plugin? Describe how you made sure that old, non-supported versions are not instrumented by accident.
• [ ] This is something else
  • [ ] I have updated CHANGELOG.asciidoc