Add schema to syncbase
1) Add client APIs related to managing db schema
- adds schema arg to NoSQLDatabase() bind
- adds db.UpgradeIfOutdated() method
- adds db.GetSchemaManager() which returns an object with {Get,Set}SchemaMetadata
- adds Schema{metadata, upgrader} struct and SchemaUpgrader interface
2) Add vdl changes
- {Get,Set}SchemaMetadata methods
- optional SchemaMetadata arg to Database.Create

MultiPart: 1/2
Change-Id: Ia920bbc55c40145cbacf8245c4d1682dcb02496d
8 files changed
tree: 6c2a8b88dc3036e5a962228134133e770223d90a
  1. services/
  2. syncbase/