Added auth for /reindex and fixed testcases

indexer-service-gcp/pom.xml

indexer-service-gcp/src/main/appengine/app.yaml

...p/osdu/indexer/auth/AuthorizationServiceEntitlements.java

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

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

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

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

...g/opengroup/osdu/indexer/service/CronServiceImplTest.java

...group/osdu/indexer/service/ElasticSettingServiceTest.java

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

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

...g/opengroup/osdu/indexer/util/HeadersInfoGcpImplTest.java

indexer-service-root/pom.xml

...n/java/org/opengroup/osdu/indexer/api/HealthCheckApi.java

.../main/java/org/opengroup/osdu/indexer/api/ReindexApi.java

...pengroup/osdu/indexer/middleware/AuthorizationFilter.java

.../opengroup/osdu/indexer/middleware/IndexerFilterTest.java

...u/indexer/middleware/RedirectHttpRequestsHandlerTest.java