GONRG-844 Rewrite ElasticClientHandlerTest

...ava/org/opengroup/osdu/indexer/IndexerGcpApplication.java

...n/java/org/opengroup/osdu/indexer/ServletInitializer.java

...ava/org/opengroup/osdu/indexer/cache/AttributesCache.java

...pengroup/osdu/indexer/cache/DatastoreCredentialCache.java

...opengroup/osdu/indexer/cache/ElasticCredentialsCache.java

...ain/java/org/opengroup/osdu/indexer/cache/IndexCache.java

.../main/java/org/opengroup/osdu/indexer/cache/JwtCache.java

...ain/java/org/opengroup/osdu/indexer/cache/KindsCache.java

...in/java/org/opengroup/osdu/indexer/cache/SchemaCache.java

...oup/osdu/indexer/di/DatastoreCredentialsCacheFactory.java

.../opengroup/osdu/indexer/di/EntitlementsClientFactory.java

...rg/opengroup/osdu/indexer/di/PubSubExtensionsFactory.java

...va/org/opengroup/osdu/indexer/middleware/IndexFilter.java

.../osdu/indexer/persistence/ElasticRepositoryDatastore.java

...ava/org/opengroup/osdu/indexer/publish/PublisherImpl.java

...opengroup/osdu/indexer/security/GSuiteSecurityConfig.java

...java/org/opengroup/osdu/indexer/util/RequestInfoImpl.java

...oup/osdu/indexer/util/ServiceAccountJwtGcpClientImpl.java

...ngroup/osdu/indexer/service/IndexerSchemaServiceTest.java