MetadataEventStreamJob. Migrated from prototype and refactored
Unit tests successful. Need to validate by running the job
Code cleanup
Tested that the work service Job works! PENDING: Validation of MaxRecords
Made some code cleanup and setting PushToCloud and UpdateTables
always to true
Purging Assertions Complete: Added a few queries for purging assertions

Made changes to update queries on Log tables to use IN clause instead of
NOT IN clause to restrict the number of rows updated
Converted all the Console.WriteLine to ETW Logs
Setting the content type of the blob to "application/json"
Instead of string urls, added json-ld IRI. For example, instead of
'nupkg' : '<url>', it will be 'nupkg' : { '@id' : 'url' }

Also, added @context to index json

Fixed all the unit tests as appropriate
Added @context and @id to events. Also, added @id to index.json
Fixed unit tests as appropriate
Incorporated Comments on the pull request
Merge pull request #18 from NuGet/daravind/EventStreamJob

Event Stream Job