Allow for multiple account usage

Changes avoid S3 buckets with the same names.

base/moose_cloudwatch_logs/vars.tf

@@ -42,6 +42,7 @@ moose_cloudwatch_log_groups = {
 EOF
 }
 
+variable "splunk_prefix" { type = string }
 variable "hec_pub_ack" { type = string }
 variable "standard_tags" { type = map }
 variable "account_name" { type = string }