message: [cluster-test] Enable LSR/Vault by default in cluster test
  This will enable lsr by default, when used with cti or in land blocking test
  Closes:
diff: @@ -51,7 +51,7 @@ pub struct ClusterBuilderParams {
  #[structopt(long, parse(try_from_str), default_value = "30")]
  pub num_validators: u32,
  #[structopt(long)]
  - pub enable_lsr: bool,
  + pub enable_lsr: Option<bool>,
  #[structopt(
  long,
  help = "Backend used by lsr. Possible Values are in-memory, on-disk, vault",
  @@ -70,6 +70,10 @@ impl ClusterBuilderParams {
  overrides
  }
  +
  + pub fn enable_lsr(&self) -> bool {
  + self.enable_lsr.unwrap_or(true)
  + }
  }
  pub struct ClusterBuilder {
  @@ -108,7 +112,7 @@ impl ClusterBuilder {
  );
  let mut instance_count =
  params.num_validators + (params.fullnodes_per_validator * params.num_validators);
  - if params.enable_lsr {
  + if params.enable_lsr() {
  if params.lsr_backend == "vault" {
  instance_count += params.num_validators * 2;
  } else {
  @@ -130,7 +134,7 @@ impl ClusterBuilder {
  .spawn_validator_and_fullnode_set(
  params.num_validators,
  params.fullnodes_per_validator,
  - params.enable_lsr,
  + params.enable_lsr(),
  &params.lsr_backend,
  current_tag,
  &params.cfg_overrides(),
  