[azure-metrics-exporter] fix: use root variable for namespace selector in metricprobes

[ewencodes]

What this PR does / why we need it

An error occur when using metricprobes.

Error: template: jobs/charts/azure-metrics-exporter/templates/_helpers.tpl:39:16: executing "azure-metrics-exporter.namespace" at <.Release.Namespace>: nil pointer evaluating interface {}.Namespace
helm.go:84: [debug] template: jobs/charts/azure-metrics-exporter/templates/_helpers.tpl:39:16: executing "azure-metrics-exporter.namespace" at <.Release.Namespace>: nil pointer evaluating interface {}.Namespace

Checklist

• Chart Version bumped
• Title of the PR starts with chart name (e.g. [azure-metrics-exporter])

[chris8205]

Yes go 4 it

[chris8205]

@mblaschke please take a look at this.... ^^^^^^^^^^^^^^^^^^^^^^

[hamelchRIT]

@jkroepke can you confirm this one pls ?

[fbrnc]

We ran into the same issue and I can also confirm that the suggested fix solves the problem. Would be nice to have an updated helm chart ready...

Thank you :)

[ewencodes]

Any update?

[ewencodes]

@jkroepke or @mblaschke ? sorry to spam but we need this...

[steinhobelgruen]

✅

[ThomasMinor]

Nice, thanks!