add support for feature-collection indexing

Data Definition team has harmonized the geo-shape payload on bulk-records. Any records that has geo-shape, must be GeoJson and must conform to the schema mentioned here. All shapes must be put in FeatureCollection.

Earlier implementation of indexer service was missing this key shape hence geo-shape indexing and search workflows was broken.

This MR adds support for FeatureCollection indexing. It also adds official opendes:wks:master-data--Wellbore:1.0.0 as integration test to validate index and search workflow.

This MR also fixes few schema parsing errors which we discovered while enabling opendes:wks:master-data--Wellbore:1.0.0 indexing.

docs/tutorial/IndexerService.md

@@ -251,7 +251,7 @@ API will respond with status of task.
 
 [Back to table of contents](#TOC)
 
-##Shema Service adoption <a name="schema-service-adoption"></a>
+##Schema Service adoption <a name="schema-service-adoption"></a>
 
 Indexer service is in adaptation process to use schemas from the Schema service instead of Storage Service.
 The Indexer Service retrieves a schema from the Schema Service if the schema is not found on the Storage Service.