Use fetchRow for single get by key

Implementations of our NoSQL backend are likely to optimize
the GenericSchema.fetchRow method, but might not optimize their
GenericAccess.scanPrimaryKey routine.  Redirect the single key
lookup through the fetchRow method instead.

Change-Id: If7b47c66077a2e24e6116f7f8035cf73ef260e6e
Signed-off-by: Shawn O. Pearce <sop@google.com>
1 file changed