create a DataONE graph epic

Create a DataONE graph store that:

runs a graph store in kubernetes that can be scaled and relocated across nodes
parses and indexes incoming metadata documents from DataONE into a set of RDF statements
- supports multiple metadata dialects, including EML, schema.org, ISO-19115*, and extensible to others
stores those RDF statements in a graph store like Virtuoso or graphDB
exposes a SPARQL endpoint for local, internal use by the team
exposes a graphical frontend for local, team exploration of the graph store
uses a high-level Dataset graph model that
- resolves how multiple versions of dataset objects are represented in the graph
- includes attribute-level and entity-level semantic measurement types from EML and other annotation sources
- includes provenance trace information from the ProvONE model in DataONE ORE graphs
- is compatible with the schema:Dataset and dcat:Dataset models, and with OAI-ORE
- is extensible to allow additional dataset and entity properties to be added as needed

DataONEorg / slinky