awsdms: don't use secure roachprod cluster

With a change to MakeClusterSettings, roachprod clusers were
set to be in secure mode by default. We don't need this for
our test so we will be going back to the default behavior
so we can use sslmode None for the dms endpoint settings.

Fixes: #119051
Release note: None

pkg/cmd/roachtest/tests/awsdms.go

@@ -562,7 +562,8 @@ func setupAWSDMS(
 func setupCockroachDBCluster(ctx context.Context, t test.Test, c cluster.Cluster) func() error {
 	return func() error {
 		t.L().Printf("setting up cockroach")
-		c.Start(ctx, t.L(), option.DefaultStartOpts(), install.MakeClusterSettings(), c.All())
+		settings := install.MakeClusterSettings(install.SecureOption(false))
+		c.Start(ctx, t.L(), option.DefaultStartOpts(), settings, c.All())
 
 		db := c.Conn(ctx, t.L(), 1)
 		for _, stmt := range []string{