fix: get server for Openapi specification

[bkioshn]

Description

Get list of server for Openapi specification

Related Issue(s)

Closes #143

Description of Changes

• The following is now added to servers in OpenAPI specification.
  • Local hostname
  • Local IPv4 and IPv6 address
• Port is added to the back of the url instead of in a variables as it should be due to poem limitation
  https://github.com/OAI/OpenAPI-Specification/blob/main/versions/3.0.0.md#server-object
• http-auto-server and https-auto-server, flags are added in case a prefix http//:, https//:, or both are needed and server_name
• SERVER_NAME, HTTP_AUTO_SERVERS, HTTPS_AUTO_SERVERS, and ADDRESS can be set through environment variable

Related Pull Requests

#208

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• My code follows the style guidelines of this project
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream module

[stevenj]

Let add two env vars with defaults.

HTTP_AUTO_SERVERS=false
HTTPS_AUTO_SERVERS=true

and create one list for each if it's true

add another env var:

SERVER_NAME="https://www.someserver.com:1234"

[stevenj]

It would be ideal if all these could be both cli parameters or env vars.
The reason is, cli parameters are easier to deal with in local testing.
But env vars are easier to deal with in deployments where we don't want to change the containers.

[stevenj]

LGTM