Template Operator - Failing to parse matchExpressions selector

[flanksaul]

Operator failing to apply matchExpressions with the following syntax:

spec:
  source:
    apiVersion: v1
    kind: ConfigMap
    labelSelector:
      matchExpressions:
        - key: environment-class
          operator: In
          values: 
            - global
            - sat
            - sit

Error log:

ts=2021-05-25T07:17:25.735807231Z level=error logger=controller msg="Reconciler error" reconcilerGroup=templating.flanksource.com reconcilerKind=Template controller=template name=alertmanager-secrets namespace= error="failed to transform LabelSelector to map: operator \"In\" without a single value cannot be converted into the old label selector format" errorVerbose="operator \"In\" without a single value cannot be converted into the old label selector format\nfailed to transform LabelSelector to map\ngithub.com/flanksource/template-operator/k8s.labelSelectorToString\n\t/workspace/k8s/template_manager.go:397\ngithub.com/flanksource/template-operator/k8s.(*TemplateManager).selectResources\n\t/workspace/k8s/template_manager.go:129\ngithub.com/flanksource/template-operator/k8s.(*TemplateManager).Run\n\t/workspace/k8s/template_manager.go:150\ngithub.com/flanksource/template-operator/controllers.(*TemplateReconciler).Reconcile\n\t/workspace/controllers/template_controller.go:62\nsigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).reconcileHandler\n\t/go/pkg/mod/sigs.k8s.io/controller-runtime@v0.6.3/pkg/internal/controller/controller.go:244\nsigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).processNextWorkItem\n\t/go/pkg/mod/sigs.k8s.io/controller-runtime@v0.6.3/pkg/internal/controller/controller.go:218\nsigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).worker\n\t/go/pkg/mod/sigs.k8s.io/controller-runtime@v0.6.3/pkg/internal/controller/controller.go:197\nk8s.io/apimachinery/pkg/util/wait.BackoffUntil.func1\n\t/go/pkg/mod/k8s.io/apimachinery@v0.19.4/pkg/util/wait/wait.go:155\nk8s.io/apimachinery/pkg/util/wait.BackoffUntil\n\t/go/pkg/mod/k8s.io/apimachinery@v0.19.4/pkg/util/wait/wait.go:156\nk8s.io/apimachinery/pkg/util/wait.JitterUntil\n\t/go/pkg/mod/k8s.io/apimachinery@v0.19.4/pkg/util/wait/wait.go:133\nk8s.io/apimachinery/pkg/util/wait.Until\n\t/go/pkg/mod/k8s.io/apimachinery@v0.19.4/pkg/util/wait/wait.go:90\nruntime.goexit\n\t/usr/local/go/src/runtime/asm_amd64.s:1357" stacktrace="github.com/go-logr/zapr.(*zapLogger).Error\n\t/go/pkg/mod/github.com/go-logr/zapr@v0.3.0/zapr.go:132\nsigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).reconcileHandler\n\t/go/pkg/mod/sigs.k8s.io/controller-runtime@v0.6.3/pkg/internal/controller/controller.go:246\nsigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).processNextWorkItem\n\t/go/pkg/mod/sigs.k8s.io/controller-runtime@v0.6.3/pkg/internal/controller/controller.go:218\nsigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).worker\n\t/go/pkg/mod/sigs.k8s.io/controller-runtime@v0.6.3/pkg/internal/controller/controller.go:197\nk8s.io/apimachinery/pkg/util/wait.BackoffUntil.func1\n\t/go/pkg/mod/k8s.io/apimachinery@v0.19.4/pkg/util/wait/wait.go:155\nk8s.io/apimachinery/pkg/util/wait.BackoffUntil\n\t/go/pkg/mod/k8s.io/apimachinery@v0.19.4/pkg/util/wait/wait.go:156\nk8s.io/apimachinery/pkg/util/wait.JitterUntil\n\t/go/pkg/mod/k8s.io/apimachinery@v0.19.4/pkg/util/wait/wait.go:133\nk8s.io/apimachinery/pkg/util/wait.Until\n\t/go/pkg/mod/k8s.io/apimachinery@v0.19.4/pkg/util/wait/wait.go:90"