Merge #98371

98371: roachtest: fix clusterImpl.IsLocal() r=retry a=msbutler

Previously, c.IsLocal() would always return false because local clusters have a time based suffix. This patch changes c.IsLocal() to return true if the cluster name is prefixed with "local".

Epic: none

Release note: none

Co-authored-by: Michael Butler <butler@cockroachlabs.com>

pkg/cmd/roachtest/cluster.go

@@ -39,6 +39,7 @@ import (
 	"github.com/cockroachdb/cockroach/pkg/cmd/roachtest/spec"
 	"github.com/cockroachdb/cockroach/pkg/cmd/roachtest/test"
 	"github.com/cockroachdb/cockroach/pkg/roachprod"
+	"github.com/cockroachdb/cockroach/pkg/roachprod/config"
 	"github.com/cockroachdb/cockroach/pkg/roachprod/install"
 	"github.com/cockroachdb/cockroach/pkg/roachprod/logger"
 	"github.com/cockroachdb/cockroach/pkg/roachprod/prometheus"
@@ -2382,8 +2383,7 @@ func (c *clusterImpl) MakeNodes(opts ...option.Option) string {
 }
 
 func (c *clusterImpl) IsLocal() bool {
-	// FIXME: I think radu made local more flexible and local is a prefix?
-	return c.name == "local"
+	return config.IsLocalClusterName(c.name)
 }
 
 func (c *clusterImpl) IsSecure() bool {