migrate indexer to spring boot/cloud

indexer-service-root/pom.xml

...src/main/java/org/opendes/indexer/IndexerApplication.java

...ce-root/src/main/java/org/opendes/indexer/SwaggerDoc.java

...c/main/java/org/opendes/indexer/api/RecordIndexerApi.java

...oot/src/main/java/org/opendes/indexer/api/ReindexApi.java

...in/java/org/opendes/indexer/middleware/IndexerFilter.java

...rg/opendes/indexer/service/IndexerMappingServiceImpl.java

...main/java/org/opendes/indexer/swagger/HomeController.java

...g/opendes/indexer/swagger/SwaggerDocumentationConfig.java

...oot/src/main/java/org/opendes/indexer/util/JobStatus.java

...est/java/org/opendes/indexer/IndexerApplicationTests.java

...test/java/org/opendes/indexer/api/HealthCheckApiTest.java

...st/java/org/opendes/indexer/api/RecordIndexerApiTest.java

...src/test/java/org/opendes/indexer/api/ReindexApiTest.java

...est/java/org/opendes/indexer/logging/AuditEventsTest.java

...est/java/org/opendes/indexer/logging/AuditLoggerTest.java

...ava/org/opendes/indexer/middleware/IndexerFilterTest.java

...s/indexer/middleware/RedirectHttpRequestsHandlerTest.java

.../test/java/org/opendes/indexer/model/ElasticTypeTest.java

...st/java/org/opendes/indexer/model/IndexingStatusTest.java