Merge #41339

41339: roachtest: improve speed of hibernate tests r=rafiss a=rafiss

These tests do a lot of schema changes, which can make them become
slower over time. Lower the GC and job retention time (and replication
factor while we're at it) to make the tests go faster.

Release justification: test only change

Release note: None

Co-authored-by: Rafi Shamim <rafi@cockroachlabs.com>

pkg/cmd/roachtest/hibernate.go

@@ -37,6 +37,37 @@ func registerHibernate(r *testRegistry) {
 		c.Put(ctx, cockroach, "./cockroach", c.All())
 		c.Start(ctx, t, c.All())
 
+		if err := repeatRunE(
+			ctx,
+			c,
+			node,
+			"change database replication and GC time",
+			`./cockroach sql --insecure -e
+        'ALTER RANGE default CONFIGURE ZONE USING num_replicas = 1, gc.ttlseconds = 120;'`,
+		); err != nil {
+			t.Fatal(err)
+		}
+		if err := repeatRunE(
+			ctx,
+			c,
+			node,
+			"change database replication and GC time",
+			`./cockroach sql --insecure -e
+        'ALTER DATABASE system CONFIGURE ZONE USING num_replicas = 1, gc.ttlseconds = 120;'`,
+		); err != nil {
+			t.Fatal(err)
+		}
+
+		if err := repeatRunE(
+			ctx,
+			c,
+			node,
+			"change jobs retention time",
+			`./cockroach sql --insecure -e 'SET CLUSTER SETTING jobs.retention_time = '180s';'`,
+		); err != nil {
+			t.Fatal(err)
+		}
+
 		t.Status("cloning hibernate and installing prerequisites")
 		latestTag, err := repeatGetLatestTag(
 			ctx, c, "hibernate", "hibernate-orm", hibernateReleaseTagRegex,