Fix/k8s deployment 460

[Saadha123]

Purpose

Rewrite and fix the WSO2 API Manager 4.6.0 Kubernetes deployment documentation (Patterns 0–6) to reflect live-tested, working deployment steps. Resolves https://github.com/wso2-enterprise/wso2-apim-internal/issues/16522

Goals

• Provide accurate, end-to-end deployment instructions for all 7 Kubernetes deployment patterns verified against Rancher, Minikube and AKS cluster
• Fix missing steps, incorrect commands, and outdated configuration that would cause deployments to fail

Approach

• Updated all 6 Kubernetes deployment patterns (Patterns 1–6) with corrections and improvements identified through live testing
• Added a Quick Start Guide (QSG) for Kubernetes deployments
• Updated VM deployment section with more consistent naming conventions across pages
• Updated the database setup section to clarify how to locate the database scripts

User stories

• As a developer evaluating WSO2 APIM, I can follow Pattern 0 docs and get a working single-node deployment without hitting undocumented errors
• As a platform engineer deploying APIM to production, I can follow Patterns 2–5 and get a correctly distributed deployment with all components communicating
• As a platform engineer using WSO2 IS as Key Manager (Pattern 6), I can build the correct IS Docker image with the right JAR version and configure it properly

Release note

Fixed and improved Kubernetes deployment documentation for WSO2 API Manager 4.6.0 across all deployment patterns (0–6), including missing deploy commands, namespace creation steps, Envoy Gateway routing controller support, and corrected configuration for Pattern 5 (KM) and Pattern 6 (IS as KM).

Documentation

This PR IS the documentation change. N/A for external links.

Training

N/A

Certification

N/A — documentation-only change with no product behaviour impact.

Marketing

N/A

Automation tests

• Unit tests: N/A — documentation only
• Integration tests: All patterns were manually tested on Rancher Desktop (Kubernetes)

Security checks

• Followed secure coding standards: N/A (docs only)
• Ran FindSecurityBugs: N/A (docs only)
• Confirmed no secrets committed: yes

Samples

N/A

Related PRs

N/A

Migrations

N/A

Test environment

• Kubernetes: Rancher Desktop (local)
• WSO2 APIM: 4.6.0
• Helm charts: wso2/wso2am-all-in-one, wso2/wso2am-acp, wso2/wso2am-tm, wso2/wso2am-universal-gw, wso2/wso2am-km (chart version 4.6.0-1)
• OS: macOS

Learning

N/A

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