Adding tests for fromHostSync

[sowmyav27]

What issue type does this pull request address? (keep at least one, remove the others)
/kind test

What does this pull request do? Which issues does it resolve? (use resolves #<issue_number> if possible)
adding tests for fromHostsync feature

• Sync specific config maps from host namespace to a different namespace in vCluster
• Delete configmap in Host, configmap in vCluster is also deleted
• Sync all config maps from host namespaces to the same namespace in vCluster

Please provide a short message that should be published in the vcluster release notes
Fixed an issue where vcluster ...

What else do we need to know?

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