Create a BatchOnly category to exclude some batch tests from Dataflow Validates Runner Streaming

Author: Abacn

.github/trigger_files/beam_PostCommit_Java_ValidatesRunner_Dataflow_Streaming.json

@@ -1,8 +1,3 @@
 {
-  "https://github.com/apache/beam/pull/34902": "Introducing OutputBuilder",
-  "comment": "Modify this file in a trivial way to cause this test suite to run",
-  "https://github.com/apache/beam/pull/31156": "noting that PR #31156 should run this test",
-  "https://github.com/apache/beam/pull/31268": "noting that PR #31268 should run this test",
-  "https://github.com/apache/beam/pull/31490": "noting that PR #31490 should run this test",
-  "https://github.com/apache/beam/pull/35159": "moving WindowedValue and making an interface"
+  "comment": "Modify this file in a trivial way to cause this test suite to run"
 }

.github/trigger_files/beam_PostCommit_Java_ValidatesRunner_Dataflow_V2_Streaming.json

@@ -1,7 +1,3 @@
 {
-  "https://github.com/apache/beam/pull/34902": "Introducing OutputBuilder",
-  "comment": "Modify this file in a trivial way to cause this test suite to run",
-  "https://github.com/apache/beam/pull/31156": "noting that PR #31156 should run this test",
-  "https://github.com/apache/beam/pull/31268": "noting that PR #31268 should run this test",
-  "https://github.com/apache/beam/pull/31490": "noting that PR #31490 should run this test"
+  "comment": "Modify this file in a trivial way to cause this test suite to run"
 }

runners/google-cloud-dataflow-java/build.gradle

@@ -440,6 +440,7 @@ task validatesRunnerStreaming {
     name: 'validatesRunnerLegacyWorkerTestStreaming',
     pipelineOptions: legacyPipelineOptions + ['--streaming'],
     excludedCategories: [
+      'org.apache.beam.sdk.testing.BatchOnly',
       'org.apache.beam.sdk.testing.UsesCommittedMetrics',
       'org.apache.beam.sdk.testing.UsesMapState',
       'org.apache.beam.sdk.testing.UsesRequiresTimeSortedInput',
@@ -550,6 +551,7 @@ task validatesRunnerV2Streaming {
     name: 'validatesRunnerV2TestStreaming',
     pipelineOptions: runnerV2PipelineOptions + ['--streaming', '--experiments=enable_streaming_engine'],
     excludedCategories: [
+      'org.apache.beam.sdk.testing.BatchOnly',
       'org.apache.beam.sdk.testing.LargeKeys$Above10KB',
       'org.apache.beam.sdk.testing.UsesBoundedSplittableParDo',
       'org.apache.beam.sdk.testing.UsesCommittedMetrics',