sql: fix TestRelocateNonVoters flake by speeding up allocator intervals

The test was failing due to race conditions between allocator operations
and manual relocate commands. Set allocator intervals to 100ms to allow
faster recovery from inconsistent replica states.

Fixes #150993

Release note: None

Epic: None

Author: spilchen

pkg/sql/BUILD.bazel

@@ -796,6 +796,7 @@ go_test(
         "//pkg/kv/kvclient/rangefeed",
         "//pkg/kv/kvpb",
         "//pkg/kv/kvserver",
+        "//pkg/kv/kvserver/allocator",
         "//pkg/kv/kvserver/concurrency/isolation",
         "//pkg/kv/kvserver/kvserverbase",
         "//pkg/kv/kvserver/protectedts",

pkg/sql/multitenant_admin_function_test.go

@@ -13,10 +13,12 @@ import (
 	"strconv"
 	"strings"
 	"testing"
+	"time"
 
 	"github.com/cockroachdb/cockroach/pkg/base"
 	"github.com/cockroachdb/cockroach/pkg/config/zonepb"
 	"github.com/cockroachdb/cockroach/pkg/kv/kvserver"
+	"github.com/cockroachdb/cockroach/pkg/kv/kvserver/allocator"
 	"github.com/cockroachdb/cockroach/pkg/kv/kvserver/kvserverbase"
 	"github.com/cockroachdb/cockroach/pkg/multitenant/tenantcapabilitiespb"
 	"github.com/cockroachdb/cockroach/pkg/roachpb"
@@ -58,6 +60,13 @@ func createTestClusterArgs(ctx context.Context, numReplicas, numVoters int32) ba
 	clusterSettings := cluster.MakeTestingClusterSettings()
 	kvserver.LoadBasedRebalancingMode.Override(ctx, &clusterSettings.SV, kvserver.LBRebalancingOff)
 	kvserverbase.MergeQueueEnabled.Override(ctx, &clusterSettings.SV, false)
+
+	// Set allocator intervals to scan faster to help with recovery from race
+	// conditions between allocator and manual relocate operations.
+	allocator.LoadBasedRebalanceInterval.Override(ctx, &clusterSettings.SV, 100*time.Millisecond)
+	kvserver.MinLeaseTransferInterval.Override(ctx, &clusterSettings.SV, 100*time.Millisecond)
+	kvserver.MinIOOverloadLeaseShedInterval.Override(ctx, &clusterSettings.SV, 100*time.Millisecond)
+
 	return base.TestClusterArgs{
 		ServerArgs: base.TestServerArgs{
 			Settings: clusterSettings,