properly disable grpc

Author: SylvainJuge

apm-agent-plugins/apm-grpc/apm-grpc-plugin/src/test/java/co/elastic/apm/agent/grpc/AbstractGrpcClientInstrumentationTest.java

@@ -29,9 +29,9 @@
 import co.elastic.apm.agent.grpc.testapp.GrpcAppProvider;
 import co.elastic.apm.agent.impl.transaction.Span;
 import co.elastic.apm.agent.impl.transaction.Transaction;
-import org.junit.Ignore;
 import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Disabled;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.params.ParameterizedTest;
 import org.junit.jupiter.params.provider.ValueSource;
@@ -164,7 +164,7 @@ void clientStreamingCallShouldBeIgnored() {
     }
 
     @Test
-    @Ignore // disabled for now as it's flaky on CI
+    @Disabled // disabled for now as it's flaky on CI
     void serverStreamingCallShouldBeIgnored() {
         String s = app.sayHelloServerStreaming("alice", 5);
         assertThat(s)