Deployment script doesn't support API server deployment

[vbaranov]

Since merging of this PR blockscout/blockscout#2376 Blockscout supports to launch of API server separately from web app server. Technically, API server is the Blockscout instance with the different set of ENV variables that utilizes the same DB as app instance or DB replica. Thus, API server should be launched in the same VPC.

[ArseniiPetrovich]

Hey. During the initial phase working on this issue we have figured out that we require query-based routing in order to split WEB and API requests correctly.
However, it looks like that this functionality is still not available at HashiCorp Terraform (see hashicorp/terraform-provider-aws#8126 for details). We are really hope to see hashicorp/terraform-provider-aws#8268 merged before we proceed to the testing phase, because otherwise it will become a blocker.