Enhance test configuration and logging

- Updated `build.gradle` to set `testClassesDirs` and `classpath` for the test task.
- Refactored `bootstrapHosts` property in integration tests to use the updated connection string property.
- Changed logging level for `org.couchbase.quickstart.springdata.controllers` to DEBUG in `logback-test.xml` for improved test logging.

These changes improve test execution and logging clarity.

Author: teetangh

build.gradle

@@ -44,5 +44,7 @@ dependencies {
 
 tasks.named('test') {
 	useJUnitPlatform()
+	testClassesDirs = sourceSets.test.output.classesDirs
+	classpath = sourceSets.test.runtimeClasspath
 }
 

src/test/java/org/couchbase/quickstart/springdata/controllers/AirlineIntegrationTest.java

@@ -30,7 +30,7 @@ class AirlineIntegrationTest {
         @Value("${local.server.port}")
         private int port;
 
-        @Value("#{systemEnvironment['DB_CONN_STR'] ?: '${spring.couchbase.bootstrap-hosts:localhost}'}")
+        @Value("#{systemEnvironment['DB_CONN_STR'] ?: '${spring.couchbase.connection-string:localhost}'}")
         private String bootstrapHosts;
 
         @Autowired

src/test/java/org/couchbase/quickstart/springdata/controllers/AirportIntegrationTest.java

@@ -32,7 +32,7 @@ class AirportIntegrationTest {
         @Value("${local.server.port}")
         private int port;
 
-        @Value("#{systemEnvironment['DB_CONN_STR'] ?: '${spring.couchbase.bootstrap-hosts:localhost}'}")
+        @Value("#{systemEnvironment['DB_CONN_STR'] ?: '${spring.couchbase.connection-string:localhost}'}")
         private String bootstrapHosts;
 
         @Autowired

src/test/java/org/couchbase/quickstart/springdata/controllers/RouteIntegrationTest.java

@@ -32,7 +32,7 @@ class RouteIntegrationTest {
         @Value("${local.server.port}")
         private int port;
 
-        @Value("#{systemEnvironment['DB_CONN_STR'] ?: '${spring.couchbase.bootstrap-hosts:localhost}'}")
+        @Value("#{systemEnvironment['DB_CONN_STR'] ?: '${spring.couchbase.connection-string:localhost}'}")
         private String bootstrapHosts;
 
         @Autowired

src/test/resources/logback-test.xml

@@ -41,7 +41,7 @@
     <logger name="org.couchbase.quickstart.springdata" level="INFO"/>
 
     <!-- Show test-related logs for debugging when needed -->
-    <logger name="org.couchbase.quickstart.springdata.controllers" level="WARN"/>
+    <logger name="org.couchbase.quickstart.springdata.controllers" level="DEBUG"/>
 
     <!-- Suppress JVM warnings -->
     <logger name="jdk.internal" level="ERROR"/>