Added test for copy-ns-labels policy

[siddhikhapare]

Related Issue(s)

Partially addresses #950

Description

added chainsaw test for copy-namespace-labels policy to test working of policy for outside and within ns with owner and multiple additional labels.

Checklist

• [x] I have read the policy contribution guidelines.
• [x] I have added test manifests and resources covering both positive and negative tests that prove this policy works as intended.
• [] I have added the artifacthub-pkg.yml file and have verified it is complete and correct.