clear test env after OtelSdkConfigsTest

Author: observeralone

config/src/test/java/com/megaease/easeagent/config/OtelSdkConfigsTest.java

@@ -18,6 +18,7 @@
 package com.megaease.easeagent.config;
 
 import com.megaease.easeagent.plugin.utils.SystemEnv;
+import org.junit.After;
 import org.junit.Assert;
 import org.junit.Test;
 
@@ -26,6 +27,15 @@
 
 public class OtelSdkConfigsTest {
 
+    @After
+    public void after() {
+        SystemEnv.set("OTEL_RESOURCE_ATTRIBUTES", null);
+        SystemEnv.set("OTEL_SERVICE_NAME", null);
+        SystemEnv.set("OTEL_SERVICE_NAMESPACE", null);
+        System.clearProperty("otel.service.name");
+        System.clearProperty("otel.service.namespace");
+    }
+
     @Test
     public void updateEnvCfg() {
         //value from system env "OTEL_RESOURCE_ATTRIBUTES