Merge from master

docs/tutorial/IndexerService.md

...a/org/opengroup/osdu/indexer/model/BulkRequestResult.java

...rg/opengroup/osdu/indexer/service/IndexerServiceImpl.java

...oup/osdu/indexer/service/StorageIndexerPayloadMapper.java

...pengroup/osdu/indexer/service/IndexerServiceImplTest.java

provider/indexer-gc/docs/anthos/README.md

provider/indexer-gc/docs/gc/README.md

...ava/org/opengroup/osdu/step_definitions/record/Steps.java

.../test/java/org/opengroup/osdu/util/conf/AnthosConfig.java

...g/opengroup/osdu/step_definitions/index/record/Steps.java

...st-gc/src/test/java/org/opengroup/osdu/util/GCConfig.java