Migrate all test classes from createService() to createSingletonService()

Switch all integration test classes to use the new singleton service
factories. This ensures each Testcontainers service is started only
once per JVM, which:
- Speeds up test suites by avoiding redundant container startups
- Enables parallel test execution (mvnd) without container conflicts
- Reduces CI resource consumption

Test isolation fixes for shared singleton instances:
- ZooKeeper ConsumeDataIT: use deleteAll() instead of delete() to
  handle nodes with children from shared instances
- Google PubSub: catch AlreadyExistsException for topics/subscriptions
  that may already exist in the shared emulator
- Hashicorp Vault: use per-class secretPath() to avoid data collisions
  between tests sharing the same Vault instance
- Consul ConsulHealthIT: use @RegisterExtension instead of manual
  lifecycle management
- Google PubSub ITs: use unique topic/subscription names per test class

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: gnodet

components/camel-ai/camel-chatscript/src/test/java/org/apache/camel/component/ChatScriptComponentIT.java

@@ -37,7 +37,7 @@ public class ChatScriptComponentIT extends CamelTestSupport {
     private static final Logger LOG = LoggerFactory.getLogger(ChatScriptComponentIT.class);
 
     @RegisterExtension
-    public static ChatScriptService service = ChatScriptServiceFactory.createService();
+    public static ChatScriptService service = ChatScriptServiceFactory.createSingletonService();
 
     @Test
     public void testChatScript() throws Exception {

components/camel-ai/camel-docling/src/test/java/org/apache/camel/component/docling/integration/DoclingITestSupport.java

@@ -31,7 +31,7 @@ public abstract class DoclingITestSupport extends CamelTestSupport {
     protected static final Logger LOG = LoggerFactory.getLogger(DoclingITestSupport.class);
 
     @RegisterExtension
-    static DoclingService doclingService = DoclingServiceFactory.createService();
+    static DoclingService doclingService = DoclingServiceFactory.createSingletonService();
 
     @Override
     protected CamelContext createCamelContext() throws Exception {

components/camel-ai/camel-docling/src/test/java/org/apache/camel/component/docling/integration/OcrExtractionIT.java

@@ -58,7 +58,7 @@ class OcrExtractionIT extends CamelTestSupport {
     private static final String TEST_TEXT_LINE3 = "OCR Test Document";
 
     @RegisterExtension
-    static DoclingService doclingService = DoclingServiceFactory.createService();
+    static DoclingService doclingService = DoclingServiceFactory.createSingletonService();
 
     @Override
     protected CamelContext createCamelContext() throws Exception {

components/camel-ai/camel-kserve/src/test/java/org/apache/camel/component/kserve/it/KServeITSupport.java

@@ -26,7 +26,7 @@
 class KServeITSupport extends CamelTestSupport {
 
     @RegisterExtension
-    static TritonService service = TritonServiceFactory.createService();
+    static TritonService service = TritonServiceFactory.createSingletonService();
 
     @Override
     protected CamelContext createCamelContext() throws Exception {

components/camel-ai/camel-langchain4j-agent/src/test/java/org/apache/camel/component/langchain4j/agent/integration/LangChain4jAgentMcpAndCamelToolsIT.java

@@ -75,7 +75,7 @@ public class LangChain4jAgentMcpAndCamelToolsIT extends CamelTestSupport {
     static OllamaService OLLAMA = OllamaServiceFactory.createSingletonService();
 
     @RegisterExtension
-    static McpEverythingService MCP_EVERYTHING = McpEverythingServiceFactory.createService();
+    static McpEverythingService MCP_EVERYTHING = McpEverythingServiceFactory.createSingletonService();
 
     @Override
     protected void setupResources() throws Exception {

components/camel-ai/camel-openai/src/test/java/org/apache/camel/component/openai/integration/OpenAIMcpAdvancedIT.java

@@ -51,7 +51,7 @@ public class OpenAIMcpAdvancedIT extends OpenAITestSupport {
     private static final String MCP_PROTOCOL_VERSIONS = "2024-11-05,2025-03-26,2025-06-18";
 
     @RegisterExtension
-    static McpEverythingService MCP_EVERYTHING = McpEverythingServiceFactory.createService();
+    static McpEverythingService MCP_EVERYTHING = McpEverythingServiceFactory.createSingletonService();
 
     private String returnDirectEndpointUri;
 

components/camel-ai/camel-openai/src/test/java/org/apache/camel/component/openai/integration/OpenAIMcpConversationStoreIT.java

@@ -57,7 +57,7 @@ public class OpenAIMcpConversationStoreIT extends OpenAITestSupport {
     private final Map<String, List<?>> conversationStore = new ConcurrentHashMap<>();
 
     @RegisterExtension
-    static McpEverythingService MCP_EVERYTHING = McpEverythingServiceFactory.createService();
+    static McpEverythingService MCP_EVERYTHING = McpEverythingServiceFactory.createSingletonService();
 
     @Override
     protected RouteBuilder createRouteBuilder() {

components/camel-ai/camel-openai/src/test/java/org/apache/camel/component/openai/integration/OpenAIMcpManualToolLoopIT.java

@@ -51,7 +51,7 @@ public class OpenAIMcpManualToolLoopIT extends OpenAITestSupport {
     private static final String MCP_PROTOCOL_VERSIONS = "2024-11-05,2025-03-26,2025-06-18";
 
     @RegisterExtension
-    static McpEverythingService MCP_EVERYTHING = McpEverythingServiceFactory.createService();
+    static McpEverythingService MCP_EVERYTHING = McpEverythingServiceFactory.createSingletonService();
 
     @Override
     protected RouteBuilder createRouteBuilder() {

components/camel-ai/camel-openai/src/test/java/org/apache/camel/component/openai/integration/OpenAIMcpToolsIT.java

@@ -43,7 +43,7 @@
 public class OpenAIMcpToolsIT extends OpenAITestSupport {
 
     @RegisterExtension
-    static McpEverythingService MCP_EVERYTHING = McpEverythingServiceFactory.createService();
+    static McpEverythingService MCP_EVERYTHING = McpEverythingServiceFactory.createSingletonService();
 
     @Override
     protected RouteBuilder createRouteBuilder() {

components/camel-ai/camel-tensorflow-serving/src/test/java/org/apache/camel/component/torchserve/it/TensorFlowServingITSupport.java

@@ -26,7 +26,7 @@
 class TensorFlowServingITSupport extends CamelTestSupport {
 
     @RegisterExtension
-    static TensorFlowServingService service = TensorFlowServingServiceFactory.createService();
+    static TensorFlowServingService service = TensorFlowServingServiceFactory.createSingletonService();
 
     @Override
     protected CamelContext createCamelContext() throws Exception {