Fixes for backwards compatibility breakage in index batch insertion.
o Updates clirr plugin config in kernel to reflect accepted breaking changes
o Added a BREAKING CHANGE note in the kernel changelog
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