feat: inf-3308 adapt charts to support Envoy Gateway

[jmpalomares]

https://parcellab.atlassian.net/browse/INF-3308

Description

Add reusable Helm templates for Envoy Gateway resources (HttpRoute, SecurityPolicy, ReferenceGrant) to common charts.

What was added:

• common/templates/_securitypolicies.tpl - Supports OIDC, JWT, Authorization, CORS, Basic Auth
• common/templates/_referencegrant.tpl - Generic template for cross-namespace references
• common/templates/_httproutes.tpl - Generic template for http routing
• Wrapper templates in microservice and monolith charts
• Configuration examples in values.yaml for both charts
• Updated README files with new toggleable resources

Benefits:

• Single source of truth for Envoy Gateway configurations
• Easy to add authentication/authorization to any service
• Flexible and production-ready templates

Notice

The templated security policies do not consider CORS settings. The main goal was to ensure the required authentication entities are present in the routes. For CORS settings, it is straight forward to add them to routes without other dependencies: https://gateway.envoyproxy.io/v1.0/tasks/security/cors/

[Copilot]

Pull request overview

This pull request adds Envoy Gateway support to the parcelLab Helm charts, introducing reusable templates for HTTPRoute, SecurityPolicy, and ReferenceGrant resources. The changes enable services to use Envoy Gateway as an alternative to traditional Ingress resources with built-in OIDC authentication, JWT validation, and authorization capabilities.

Changes:

• Added three new common templates for Envoy Gateway resources (HTTPRoute, SecurityPolicy, ReferenceGrant) with comprehensive OIDC/JWT/authorization configuration support
• Integrated Envoy Gateway support into microservice and monolith charts with wrapper templates and configuration examples
• Updated chart versions (common 1.2.3→1.3.0, microservice 0.4.2→0.5.0, monolith 0.4.1→0.5.0, cronjob 0.4.1→0.4.2, worker-group 0.3.1→0.3.2)
• Enhanced documentation in README files and added new npm script for prettier formatting

Reviewed changes

Copilot reviewed 21 out of 22 changed files in this pull request and generated 15 comments.

Show a summary per file

File	Description
parcellab/common/templates/_securitypolicies.tpl	New template for Envoy Gateway SecurityPolicy with OIDC, JWT, and authorization support
parcellab/common/templates/_referencegrant.tpl	New template for cross-namespace ReferenceGrant resources
parcellab/common/templates/_httproutes.tpl	New template for HTTPRoute with automatic labeling and external-dns annotations
parcellab/common/templates/_routing.tpl	New routing helper template (appears unused)
parcellab/common/values.yaml	Added default envoy configuration structure
parcellab/common/Chart.yaml	Version bump from 1.2.3 to 1.3.0
parcellab/microservice/templates/*.yaml	Added wrapper templates for securitypolicies, referencegrant, and httproutes
parcellab/microservice/values.yaml	Added comprehensive envoy configuration examples
parcellab/microservice/Chart.yaml	Version bump from 0.4.2 to 0.5.0
parcellab/microservice/README.md	Updated documentation for envoy resources
parcellab/monolith/templates/*.yaml	Added wrapper templates for securitypolicies, referencegrant, and httproutes
parcellab/monolith/values.yaml	Added comprehensive envoy configuration examples
parcellab/monolith/Chart.yaml	Version bump from 0.4.1 to 0.5.0
parcellab/monolith/README.md	Updated documentation for envoy resources
parcellab/cronjob/Chart.yaml	Version bump from 0.4.1 to 0.4.2
parcellab/worker-group/Chart.yaml	Version bump from 0.3.1 to 0.3.2
parcellab/worker-group/README.md	Removed trailing whitespace
package.json	Added lint:prettier:fix script

[Copilot]

@andibeuge I've opened a new pull request, #417, to work on those changes. Once the pull request is ready, I'll request review from you.

[Copilot]

@andibeuge I've opened a new pull request, #418, to work on those changes. Once the pull request is ready, I'll request review from you.