Enable booting testnet validators without tower required (backport #19298) (#19306)

* Enable booting testnet validators without tower required (#19298)

(cherry picked from commit 7d135f185c)

# Conflicts:
#	net/net.sh

* Fix conflicts

Co-authored-by: Tyera Eulberg <teulberg@gmail.com>
Co-authored-by: Tyera Eulberg <tyera@solana.com>

multinode-demo/validator.sh

@@ -45,6 +45,8 @@ EOF
   exit 1
 }
 
+maybeRequireTower=true
+
 positional_args=()
 while [[ -n $1 ]]; do
   if [[ ${1:0:1} = - ]]; then
@@ -158,6 +160,9 @@ while [[ -n $1 ]]; do
     elif [[ $1 == --accounts-db-skip-shrink ]]; then
       args+=("$1")
       shift
+    elif [[ $1 == --skip-require-tower ]]; then
+      maybeRequireTower=false
+      shift
     elif [[ $1 = -h ]]; then
       usage "$@"
     else
@@ -230,7 +235,10 @@ default_arg --identity "$identity"
 default_arg --vote-account "$vote_account"
 default_arg --ledger "$ledger_dir"
 default_arg --log -
-default_arg --require-tower
+
+if [[ $maybeRequireTower = true ]]; then
+  default_arg --require-tower
+fi
 
 if [[ -n $SOLANA_CUDA ]]; then
   program=$solana_validator_cuda