fix: replace deprecated liquid.UnitNone with liquid.UnitPiece

The go-api-declarations v1.24.0 deprecates UnitNone in favor of
UnitPiece which has the same meaning but serializes differently.

Co-authored-by: Markus Wieland <SoWieMarkus@users.noreply.github.com>

Author: cortex-ai-agents[bot]

internal/scheduling/reservations/commitments/api/info.go

@@ -165,7 +165,7 @@ func (api *HTTPAPI) buildServiceInfo(ctx context.Context, logger logr.Logger) (l
 				"CPU cores (usable by: %s)",
 				flavorListStr,
 			),
-			Unit:                liquid.UnitNone,
+			Unit:                liquid.UnitPiece,
 			Topology:            liquid.AZSeparatedTopology,
 			NeedsResourceDemand: false,
 			HasCapacity:         resCfg.Cores.HasCapacity,
@@ -181,7 +181,7 @@ func (api *HTTPAPI) buildServiceInfo(ctx context.Context, logger logr.Logger) (l
 				"instances (usable by: %s)",
 				flavorListStr,
 			),
-			Unit:                liquid.UnitNone,
+			Unit:                liquid.UnitPiece,
 			Topology:            liquid.AZSeparatedTopology,
 			NeedsResourceDemand: false,
 			HasCapacity:         resCfg.Instances.HasCapacity,