Some small AWS improvements

README.md

@@ -144,6 +144,7 @@ $ terraform apply
 
 Deploy Controllers into VPC:
 Edit Provision_Instances/my_instances_variables.auto.tfvars.json with appropriate settings.
+> Note: Default maximum Elastic IPs per VPC is 5, the setup needs 6. You can ask for an increase of your VPC EIP quota here: https://console.aws.amazon.com/servicequotas/home/services/ec2/quotas/L-0263D0A3
 ```
 {
     "vbond_instances_type": "c5.large",

aws/Provision_Instances/aws.tf

@@ -1,5 +1,5 @@
 provider "aws" {
-  shared_credentials_file = "~/.aws/credentials"
-  profile                 = "terraform"
-  region                  = "${data.terraform_remote_state.spam.outputs.region}"
+  shared_credentials_files = ["~/.aws/credentials"]
+  profile                  = "terraform"
+  region                   = "${data.terraform_remote_state.spam.outputs.region}"
 }

aws/Provision_VPC/aws.tf

@@ -1,5 +1,5 @@
 provider "aws" {
-  shared_credentials_file = "~/.aws/credentials"
-  profile                 = "terraform"
-  region                  = "${var.region}"
+  shared_credentials_files = ["~/.aws/credentials"]
+  profile                  = "terraform"
+  region                   = "${var.region}"
 }