Use a small graph of actors and movies for example queries.

o This graph is much more meaningful that the abstract graph it replaces.
o We chose to include Martin Sheen and Charlie Sheen because their family
  relationship makes many examples easy that are otherwise difficult in a
  strictly bipartite person/movie graph.
Replace deprecated method.
Fixes docs build
Adds first schema index testing to TestBatchInsert
Changes index rules to store index provider description

o Introduces SchemaIndexProviderMap in Kernel, TxState, IndexingService
  that verifies that provider and index rule match
o Adds SchmeaIndexProvider.Descriptor(providerKey, providerVersion)
o Changes IndexRules to store this descriptor
o Adds some BatchInserter tests