Add partial network outage before test functionality (#17291)

* Add partial network outage before testing functionality

Allow a percentage of the stake to go offline before an automation test starts

* code review fixes

system-test/automation_utils.sh

@@ -60,7 +60,7 @@ function analyze_packet_loss {
   )
 }
 
-function wait_for_bootstrap_validator_stake_drop {
+function wait_for_max_stake {
   max_stake="$1"
   if [[ $max_stake -eq 100 ]]; then
     return
@@ -74,6 +74,16 @@ function wait_for_bootstrap_validator_stake_drop {
   ssh "${sshOptions[@]}" "${validatorIpList[0]}" "RUST_LOG=info \$HOME/.cargo/bin/solana wait-for-max-stake $max_stake --url http://127.0.0.1:8899"
 }
 
+function wait_for_equal_stake {
+  source "${REPO_ROOT}"/net/common.sh
+  loadConfigFile
+
+  max_stake=$((100 / ${#validatorIpList[@]} + 1))
+  execution_step "Waiting for max stake to fall below ${max_stake}%"
+
+  wait_for_max_stake $max_stake
+}
+
 function get_slot {
   source "${REPO_ROOT}"/net/common.sh
   loadConfigFile