Look Into Allowing Regex in InNamespace

[TristanHoladay]

Is your feature request related to a problem? Please describe.

For uds-core policy exemptions, there might be a case for optionally locking down which namespace the operator watches for Exemption CRs. With the current implementation of .InNamespace(), it does not look to be possible to set it to a single namespace or list / all namespaces based on env var. (e.g. .InNamespace(process.env.EXEMPTION_NS))

Describe the solution you'd like

• Given an admin wants the option to allow single or all namespaces in .InNamespace(), or maybe namespaces that fit a pattern
• he or she could use a regex patterns like so .InNamspace(".*") , .InNamespace("uds-policy-exemptions"), .InNamespace("*-policy-exemptions")

Describe alternatives you've considered

The alternative is to do this as the module author in the validator and not use .InNamespace().