Fix error messages for resources with default namespace

[lblackstone]

Proposed changes

Previous:

error: Plan apply failed: resource foo/%!s(MISSING) was not successfully created by the Kubernetes API server : Deployment.apps "foo" is invalid: spec.selector: Invalid value: v1.LabelSelector{MatchLabels:map[string]string(nil), MatchExpressions:[]v1.LabelSelectorRequirement(nil)}: empty selector is invalid for deployment

Fixed:

error: Plan apply failed: resource foo was not successfully created by the Kubernetes API server : Deployment.apps "foo" is invalid: spec.selector: Invalid value: v1.LabelSelector{MatchLabels:map[string]string(nil), MatchExpressions:[]v1.LabelSelectorRequirement(nil)}: empty selector is invalid for deployment

Related issues (optional)

Fix #735