Set service.namespace attribute to same value as service.group for purpose of Resource attributes

Signed-off-by: Vanio Begic <[email protected]>

Author: thecooldrop

spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/opentelemetry/OpenTelemetryAutoConfiguration.java

@@ -80,6 +80,8 @@ private Resource toResource(Environment environment, OpenTelemetryProperties pro
 			.asMap();
 		attributes.computeIfAbsent("service.name", (key) -> getApplicationName(environment));
 		attributes.computeIfAbsent("service.group", (key) -> getApplicationGroup(environment));
+		// See https://github.com/spring-projects/spring-boot/issues/44411 for potential information about deprecation of "service.group" attribute
+		attributes.computeIfAbsent("service.namespace", (key) -> getApplicationGroup(environment));
 		attributes.forEach(builder::put);
 		return builder.build();
 	}