M112-T133-A002 implements DatastoreQuery language WKT support

see M112-133-A001 for coi-services/discovery
see M112-133-A003 for pyon/PostgresQuery
M112-T133-A002 implements PostgresQuery language WKT support

see M112-133-A001 for coi-services/discovery
see M112-133-A002 for pyon/DatastoreQuery
M112-T134-A003 testing for WKT support

unit and integration tests
see M112-133-A002 for pyon/DatastoreQuery
see M112-133-A003 for pyon/PostgresQuery
M112 - T133 PR cleanup
Merge pull request #469 from brianmckenna/m112_t133

CIDEVSTC-99 - WKT handling by datastore/Postgres