Update .gitmodules
Update .gitmodules

Specified a branch so that git pull with recursive works
anavidad3/flume-ingestion,Stratio/Ingestion,Stratio/flume-ingestion,dvallejo/flume-ingestion,Stratio/Ingestion,anavidad3/flume-ingestion,dvallejo/flume-ingestion,alvsanand/flume-ingestion,Stratio/flume-ingestion,alvsanand/flume-ingestion