Merge branch 'optional-feauture-testing' into 'index_extended_properties'

devops/gc/pipeline/override-stages.yml

provider/indexer-aws/README.md

provider/indexer-azure/README.md

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

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

...g/indexer-test-aws/src/test/resources/cucumber.properties

...indexer-test-azure/src/test/resources/cucumber.properties

...xer-test-baremetal/src/test/resources/cucumber.properties

...ndexer-test-baremetal/src/test/resources/logback-test.xml

testing/indexer-test-core/pom.xml

...s/features/indexrecord/indexRecord-schema-service.feature

testing/indexer-test-gc/pom.xml

...ng/indexer-test-gc/src/test/resources/cucumber.properties

...g/indexer-test-ibm/src/main/resources/cucumber.properties