feat(ocis): enable OTLP and antivirus tracing

[amamus]

Description

• allow otlp as a supported global tracing provider while retaining the Jaeger default
• document the provider-specific endpoint and collector behavior, including the OTLP gRPC port
• activate the four supported ANTIVIRUS_TRACING_* environment variables
• exercise the source-aligned OTLP configuration in the chart's comprehensive CI values profile

Changed files:

• charts/ocis/values.yaml
• charts/ocis/values.schema.json
• charts/ocis/templates/antivirus/deployment.yaml
• charts/ocis/ci/lint-values.yaml
• charts/ocis/docs/values.adoc.yaml
• charts/ocis/docs/values-desc-table.adoc

Related Issue

• oCIS-to-Helm alignment backlog: ISSUE 16

Motivation and Context

The chart schema accepted only Jaeger even though the current oCIS reference deployment uses OTLP, causing source-aligned values to fail Helm schema validation. The chart also retained a stale comment saying Antivirus tracing was not implemented, so Antivirus did not receive the shared tracing configuration.

The alignment source of truth is deployments/examples/ocis_full. Its tracing environment selects otlp and the gRPC endpoint jaeger:4317. The current Antivirus tracing configuration supports the enabled, type, endpoint, and collector variables for both global and service-specific prefixes.

Jaeger remains the backward-compatible chart default. tracing.collector is documented as the Jaeger HTTP fallback because the oCIS OTLP provider consumes only tracing.endpoint.

This PR is based directly on the current owncloud/ocis-charts default branch and has no dependency on an earlier alignment PR. Scanner and ClamAV deployment changes remain reserved for ISSUE 17.

How Has This Been Tested?

• test environment: Helm 3.16.2, Helmfile 0.169.1, kube-linter 0.6.8, and kubeconform 0.6.7 on macOS arm64
• verified the generated schema accepts jaeger and otlp and rejects an unsupported zipkin value
• parsed focused renders to verify the Antivirus deployment receives each tracing variable exactly once with both legacy Jaeger defaults and otlp/jaeger:4317
• verified the exhaustive render has 33 traced Deployments and 132 tracing environment variables with consistent OTLP values
• verified disabling virus scanning omits the Antivirus workload
• make docs GOBIN=/private/tmp/ocis-issue10-tools (schema and documentation generation is idempotent)
• make lint-ci GOBIN=/private/tmp/ocis-issue10-tools
• make lint-examples GOBIN=/private/tmp/ocis-issue10-tools (all ten examples)
• make api GOBIN=/private/tmp/ocis-issue10-tools (Kubernetes 1.28, 1.29, 1.30, and 1.31; 177/177 resources valid for each version)
• packaged the chart successfully and inspected its generated values
• git diff --check

Screenshots (if appropriate):

Not applicable.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Technical debt
• Tests only (no source changes)

Checklist:

• Code changes
• Unit tests added (not applicable; the configuration is covered by schema, parsed render, and lint-profile validation)
• Acceptance tests added (not applicable)
• Documentation generated (make docs) and committed
• Documentation ticket raised (not applicable)
• Documentation PR created (not applicable)