feat: add image.tag support and make tag/digest optional in deployment templates

[Copilot]

• Explore repository structure and find all deployment files with image digest pattern
• Update all-in-one/templates/am/instance-1/wso2am-deployment.yaml
• Update all-in-one/templates/am/instance-2/wso2am-deployment.yaml
• Update distributed/control-plane/templates/control-plane/instance-1/wso2am-cp-deployment.yaml
• Update distributed/control-plane/templates/control-plane/instance-2/wso2am-cp-deployment.yaml
• Update distributed/gateway/templates/gateway/wso2am-gateway-deployment.yaml
• Update distributed/key-manager/templates/key-manager/wso2am-km-deployment.yaml
• Update distributed/traffic-manager/templates/traffic-manager/instance-1/wso2am-tm-deployment.yaml
• Update distributed/traffic-manager/templates/traffic-manager/instance-2/wso2am-tm-deployment.yaml
• Add image.tag field to all deployment templates (per PR feedback)
• Add tag field to all values.yaml files (all-in-one and 4 distributed charts)
• Update docs default_values.yaml files (14 files across 6 pattern folders)
• Fix: make image.tag conditional to prevent invalid image references
• Revert README updates from helm-docs
• Change image logic to if-else-if pattern (digest > tag > none)

[CLAassistant]

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1 out of 2 committers have signed the CLA.

✅ kavindasr
❌ Copilot
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[kavindasr]

@copilot add .Values.wso2.deployment.image.tag to the image:. It should look like this:

image: {{ .Values.wso2.deployment.image.registry }}/{{ .Values.wso2.deployment.image.repository }}:{{} .Values.wso2.deployment.image.tag }{{- if .Values.wso2.deployment.image.digest }}@{{ .Values.wso2.deployment.image.digest }}{{- end }}

• update the values.yaml files
• update all the default values.yamls in https://github.com/wso2/helm-apim/tree/main/docs

[Copilot]

@copilot add .Values.wso2.deployment.image.tag to the image:. It should look like this:

image: {{ .Values.wso2.deployment.image.registry }}/{{ .Values.wso2.deployment.image.repository }}:{{}...

Added .Values.wso2.deployment.image.tag to the image reference in all 8 deployment templates with conditional logic. Also added the tag field to all 5 values.yaml files and updated all 14 docs default_values.yaml files across the 6 pattern folders. (d04deec)

[kavindasr]

@copilot use helm-docs and update the readme files

[Copilot]

@copilot use helm-docs and update the readme files

Updated all 5 README files using helm-docs v1.14.2 to include the new image.tag field documentation. (8db8be2)