put all autoconfigure code into one module

[yungez]

1. put all autoconfigure code into one module: aad, documentdb, microsoft graph, storage, service bus, media service
2. delete spring data documentdb code, use dependency to spring-data-cosmosdb-documentdb
3. remove documentdb emulator setup in appveyor
4. update dependency of related starters who contains autoconfigure only

[msftclas]

@yungez,
Thanks for your contribution as a Microsoft full-time employee or intern. You do not need to sign a CLA.
Thanks,
Microsoft Pull Request Bot

[ZhijunZhao]

A few suggestions as below:

1. Create a starters folder and put all starters inside. At least, folder path like storage/azure-storage-spring-boot-starter should be changed to azure-storage-spring-boot-starter

2. remove the common folder and move the parent and config out.

[yungez]

@ZhijunZhao, all good points. Can we make it in next PR? this one is already too hugh. :)

[ZhijunZhao]

Let me make a few more changes in my next PR