Fix CRC cluster-type detection, classification, and exposure handling

[kovayur]

Problem

CRC (CodeReady Containers) is OpenShift 4 running locally. It was misdetected and misclassified, and once deployed it stayed wrong on every subsequent deploy.

Fixes

Detection (env.DetectClusterType): CRC reports OpenShift 4 API resources, so it is handled inside the OpenShift 4 branch. A CRC cluster is identified by its api.crc.testing server host (isCRCOpenShift4) and classified as ClusterTypeCRC rather than a plain OpenShift4 cluster.

Classification (types.ClusterType):

• CRC: IsOpenShift true (OpenShift-style routes/operator/default-registry pull secrets) and local, with LoadBalancer gated out (small resource profile, port-forward, no LoadBalancer).

Only CRC's OpenShift preset is supported. The MicroShift preset is intentionally not supported: MicroShift does not serve the config.openshift.io API group, so the operator renders Central with non-OpenShift securityContexts (explicit UIDs/fsGroups) that MicroShift's SCCs then reject. Supporting it would require roxie to work around the operator's platform detection, which is out of scope here.

Testing

Extended unit tests for detection, classification, and defaults. go build ./... and go test ./... pass.
Smoke tested on the CRC OpenShift preset.

🤖 Generated with Claude Code

Summary by CodeRabbit

• Bug Fixes
  • CRC clusters are now identified from the API server address, regardless of hostname casing. Context names alone no longer identify a cluster as CRC.
  • CRC is classified as an OpenShift cluster, but is not reported as supporting load balancers.
• Tests
  • Added coverage for cluster classification and CRC detection across supported cluster types.

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• Configuration used: Repository: stackrox/roxie/.coderabbit.yml
• Review profile: CHILL
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• Run ID: c7dfd9b1-e855-46db-b7d6-bcd5f4717257

📥 Commits

Reviewing files that changed from the base of the PR and between e2d4c9d and 71e8722.

📒 Files selected for processing: 4

• internal/env/env.go
• internal/env/env_test.go
• internal/types/cluster_type.go
• internal/types/cluster_type_test.go

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📝 Walkthrough

CRC detection now uses the case-insensitive API server hostname api.crc.testing instead of context-name patterns. CRC is classified as OpenShift, but SupportsLoadBalancer returns false for CRC. Tests cover hostname detection and cluster-type predicates.

Changes: CRC cluster classification

Layer / File(s)	Summary
CRC cluster predicates internal/types/cluster_type.go, internal/types/cluster_type_test.go	IsOpenShift now includes CRC. SupportsLoadBalancer excludes CRC while retaining support for other OpenShift types, GKE, AKS, and EKS. Tests cover four predicates across eight cluster types.
CRC hostname detection internal/env/env.go, internal/env/env_test.go	OpenShift 4 detection identifies CRC from the API server hostname api.crc.testing, ignoring case. CRC-like context names alone no longer identify CRC. Tests cover matching and non-matching hosts and contexts.

Priority: ➖ Normal

Estimated code review effort: 2 (Simple) | ~10 minutes

Change: Bug fix · Severity of issue fixed: Medium

Suggested reviewers: mclasmeier

Merge Risk: ⚪ Minimal · up to 71e87

No actionable merge-blocking risk is identified; the change is ready for normal merge checks.

Pre-merge checks: 3 · 2

Failed checks: 2 warnings

Check name	Status	Explanation	Resolution
Linked Issues check		Issue #282 requires a route exposure option for local CRC deployments. The reviewed internal/types/exposure.go defines only ExposureNone and ExposureLoadBalancer. It has no route parsing, seri…	Implement route as an exposure value through configuration parsing, validation, serialization, and deployment behavior. Add automated tests for CRC route, LoadBalancer, and none exposure behavior.
Docstring Coverage		Docstring coverage is 15.38% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 13 functions across 5 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

Passed checks: 3 passed

Check name	Status	Explanation
Out of Scope Changes check		The reviewed changes stay within the stated CRC scope. They update CRC detection, cluster classification, LoadBalancer support, and related tests. The MicroShift exclusion documents an intentional sco…
Description Check		Check skipped - CodeRabbit’s high-level summary is enabled.
Title check		The title clearly and concisely summarizes the main changes: CRC detection, cluster classification, and exposure handling.

Full details: Linked Issues check

Explanation

Issue #282 requires a route exposure option for local CRC deployments. The reviewed internal/types/exposure.go defines only ExposureNone and ExposureLoadBalancer. It has no route parsing, serialization, or deployment configuration. The PR changes classify CRC and disable LoadBalancer support, but they do not implement the required route option or resolve the exposure control described in #282.

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Actionable comments posted: 1

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Inline comments:
Review comments at @internal/env/env.go:
- Line 218: Update the CRC hostname check used by DetectClusterType to compare
parsedURL.Hostname() with "api.crc.testing" case-insensitively using
strings.EqualFold, and add a test confirming an uppercase CRC hostname is
detected correctly.

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ℹ️ Review info

⚙️ Run configuration

• Configuration used: Repository: stackrox/roxie/.coderabbit.yml
• Review profile: CHILL
• Plan: Advanced
• Run ID: f74e9fd5-4a5e-45d1-ada4-a4f3af3845c3

📥 Commits

Reviewing files that changed from the base of the PR and between 1773975 and e2d4c9d.

📒 Files selected for processing: 5

• internal/clusterdefaults/clusterdefaults_test.go
• internal/env/env.go
• internal/env/env_test.go
• internal/types/cluster_type.go
• internal/types/cluster_type_test.go

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[AlexVulaj]

Can we add a case with the CRC server hostname but only Kubernetes API resources? That would protect the OpenShift-preset requirement if the detection order changes in the future.