feat: Add support for the NGINX ngx_mgmt_module module.

[alessfg]

Proposed changes

Add templating support for the ngx_mgmt_module NGINX module.

Checklist

Before creating a PR, run through this checklist and mark each as complete:

• I have read the contributing guidelines.
• I have signed the F5 Contributor License Agreement (CLA).
• If applicable, I have added Molecule tests that prove my fix is effective or that my feature works.
• If applicable, I have checked that any relevant Molecule tests pass after adding my changes.
• I have updated any relevant documentation (defaults/main/*.yml, README.md and CHANGELOG.md).

[Copilot]

Pull Request Overview

This PR introduces templating support for the NGINX ngx_mgmt_module, while updating the default configuration and Molecule tests to validate the new management directives.

• Added a new mgmt block in the nginx.conf.j2 template that conditionally renders management configuration.
• Expanded the core.j2 macros to include mgmt configuration logic.
• Updated Molecule tests and default templates to support NGINX Plus configuration using the mgmt directives.

Reviewed Changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
templates/nginx.conf.j2	Inserts a conditional mgmt block to render management configuration.
templates/core.j2	Adds a macro for generating mgmt directives.
molecule/entitlement_plus/verify.yml	Adds Molecule tests verifying NGINX Plus presence and service state.
molecule/entitlement_plus/prepare.yml	Prepares license files; note potential inconsistency for JWT processing.
molecule/entitlement_plus/molecule.yml	Adds a new job for entitlement_plus testing in the workflow.
molecule/entitlement_plus/converge.yml	Configures NGINX including new mgmt parameters via ansible-role-nginx-config.
defaults/main/template.yml	Provides default mgmt configuration values supporting NGINX Plus.
CHANGELOG.md	Updates changelog to reflect support for both management and stream modules.
.github/workflows/molecule.yml	Updates workflow to run entitlement_plus tests.