Clean up and simplify GOP dependencies

[avetgit]

Summary

Reduces the GOP dependency footprint and replaces problematic or unnecessary dependencies with approved or project-local alternatives.

Changes

• Removed byte-buddy-agent and Hamcrest
• Removed System Stubs and Awaitility
• Unified Kubernetes access on Fabric8
• Replaced wiremock-jetty12 with wiremock-standalone
• Removed the versionName annotation processor and JavaPoet
• Replaced unnecessary external dependencies with JDK or project-local solutions

Verification

• Unit and integration tests are green
• ./mvnw clean verify succeeds
• The cleaned dependency tree no longer contains the removed dependencies

[Copilot]

🔵 Needs a closer look

The loaded version resource retains a trailing newline, causing an extra blank line in application output.

Pull request overview

This pull request reduces the GOP dependency footprint by replacing external utilities and clients with JDK, project-local, and Fabric8 alternatives.

Changes:

• Removes obsolete test and version-generation dependencies.
• Adds local polling and injectable environment access.
• Consolidates Kubernetes access on Fabric8.
• Moves version metadata to a filtered resource.

File summaries

File	Summary
src/test/resources/mockito-extensions/org.mockito.plugins.MockMaker	Configures Mockito subclass mocking.
src/test/java/com/cloudogu/gitops/tools/core/scmmanager/ScmManagerSetupTest.java	Uses concrete Retrofit error responses.
src/test/java/com/cloudogu/gitops/tools/core/argocd/ArgoCDConfigurationTest.java	Removes environment stubbing.
src/test/java/com/cloudogu/gitops/integration/tools/MonitoringTestIT.java	Migrates Kubernetes checks to Fabric8.
src/test/java/com/cloudogu/gitops/integration/tools/KubernetesApiTestSetup.java	Uses local polling support.
src/test/java/com/cloudogu/gitops/integration/TestK8sHelper.java	Replaces Awaitility polling.
src/test/java/com/cloudogu/gitops/integration/profiles/PrefixProfileTestIT.java	Updates integration timeout handling.
src/test/java/com/cloudogu/gitops/integration/profiles/PetclinicProfileTestIT.java	Updates integration timeout handling.
src/test/java/com/cloudogu/gitops/integration/profiles/MandantProfileTestIT.java	Replaces Awaitility polling.
src/test/java/com/cloudogu/gitops/integration/profiles/ArgoCDOperatorProfileTestIT.java	Replaces Awaitility polling.
src/test/java/com/cloudogu/gitops/integration/PollingTest.java	Tests local polling behavior.
src/test/java/com/cloudogu/gitops/integration/Polling.java	Adds local polling implementation.
src/test/java/com/cloudogu/gitops/infrastructure/kubernetes/api/K8sClientTest.java	Tests generic Fabric8 resources.
src/test/java/com/cloudogu/gitops/dependencyinjection/okhttp/RetryInterceptorTest.java	Tests timeout retries with direct mocks.
src/test/java/com/cloudogu/gitops/cli/VersionTest.java	Verifies filtered version metadata.
src/test/java/com/cloudogu/gitops/cli/ApplicationConfiguratorTest.java	Tests injected environment access and precedence.
src/test/java/com/cloudogu/gitops/application/content/ContentLoaderTest.java	Uses a test subclass instead of Jenkins mocking.
src/main/version/version-name.txt	Defines the filtered version resource.
src/main/java/com/cloudogu/gitops/infrastructure/kubernetes/api/K8sClient.java	Uses generic Fabric8 resources for OpenShift projects.
src/main/java/com/cloudogu/gitops/cli/Version.java	Loads version metadata; the trailing resource newline needs trimming.
src/main/java/com/cloudogu/gitops/cli/package-info.java	Removes obsolete version metadata.
src/main/java/com/cloudogu/gitops/cli/ApplicationConfigurator.java	Adds injectable environment lookup.
pom.xml	Removes dependencies and configures resource filtering and Mockito.

Review details

Suppressed comments (1)

src/main/java/com/cloudogu/gitops/cli/Version.java:22

• The filtered resource is a text file with an end-of-file newline, so this returns Version.NAME with a trailing line break. createVersionOutput() appends that value to the application name and logs it, producing an extra blank line compared with the previous generated constant; trim only the resource terminator when loading it.

			return new String(input.readAllBytes(), StandardCharsets.UTF_8);

• Files reviewed: 23/23 changed files
• Comments generated: 0
• Review effort level: Lite

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