Adds NLB IPs to Outputs for Indexer Cluster

To be tagged v1.24.14

base/splunk_servers/indexer_cluster/outputs.tf

@@ -1,3 +1,8 @@
 output "elb_attachments" {
   value = [ module.indexer0.asg_name[0], module.indexer1.asg_name[0], module.indexer2.asg_name[0] ]
 }
+
+output "nlb_ips" {
+  # Should be in git@github.xdr.accenturefederalcyber.com:mdr-engineering/msoc-CUST-pop.git in deployment-apps/CUST_hf_outputs/local/outputs.conf
+  value = aws_eip.nlb[*].public_ip
+}