Use custom resource to avoid version number in assertion string. (#4065)

Author: anuraaga

sdk/all/src/test/java/io/opentelemetry/sdk/OpenTelemetrySdkTest.java

@@ -13,6 +13,7 @@
 
 import io.opentelemetry.api.GlobalOpenTelemetry;
 import io.opentelemetry.api.OpenTelemetry;
+import io.opentelemetry.api.common.AttributeKey;
 import io.opentelemetry.api.common.Attributes;
 import io.opentelemetry.api.trace.TracerProvider;
 import io.opentelemetry.context.propagation.ContextPropagators;
@@ -284,10 +285,13 @@ void minimalOpenTelemetrySdkConfigurationDemo() {
   void stringRepresentation() {
     SpanExporter exporter = mock(SpanExporter.class);
     when(exporter.toString()).thenReturn("MockSpanExporter{}");
+    Resource resource =
+        Resource.builder().put(AttributeKey.stringKey("service.name"), "otel-test").build();
     OpenTelemetrySdk sdk =
         OpenTelemetrySdk.builder()
             .setTracerProvider(
                 SdkTracerProvider.builder()
+                    .setResource(resource)
                     .addSpanProcessor(
                         SimpleSpanProcessor.create(SpanExporter.composite(exporter, exporter)))
                     .build())
@@ -299,7 +303,7 @@ void stringRepresentation() {
                 + "tracerProvider=SdkTracerProvider{"
                 + "clock=SystemClock{}, "
                 + "idGenerator=RandomIdGenerator{}, "
-                + "resource=Resource{schemaUrl=null, attributes={service.name=\"unknown_service:java\", telemetry.sdk.language=\"java\", telemetry.sdk.name=\"opentelemetry\", telemetry.sdk.version=\"1.10.0-SNAPSHOT\"}}, "
+                + "resource=Resource{schemaUrl=null, attributes={service.name=\"otel-test\"}}, "
                 + "spanLimitsSupplier=SpanLimitsValue{maxNumberOfAttributes=128, maxNumberOfEvents=128, maxNumberOfLinks=128, maxNumberOfAttributesPerEvent=128, maxNumberOfAttributesPerLink=128, maxAttributeValueLength=2147483647}, "
                 + "sampler=ParentBased{root:AlwaysOnSampler,remoteParentSampled:AlwaysOnSampler,remoteParentNotSampled:AlwaysOffSampler,localParentSampled:AlwaysOnSampler,localParentNotSampled:AlwaysOffSampler}, "
                 + "spanProcessor=SimpleSpanProcessor{spanExporter=MultiSpanExporter{spanExporters=[MockSpanExporter{}, MockSpanExporter{}]}}}}");