🐛 Fix remove namespace arg check for provider

[serngawy]

What this PR does / why we need it:
We prevent the providers to be scoped to a namespace. This PR remove the namespace arg check.

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #624

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[furkatgofurov7]

/ok-to-test

[furkatgofurov7]

/approve

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[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: furkatgofurov7

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[Fedosin]

/lgtm

[k8s-ci-robot]

LGTM label has been added.

Git tree hash: 0408c7ef9fff3dc67930b90115a3141fb34a6207