Add unique labels to api and watcher services

[enarha]

Changes

Added unique labels to the api and watcher services. One use case for having them is to match each service in ServiceMonitor for metrics collection. Both api and watcher already expose Prometheues metrics.

/kind misc

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Release Notes

Added unique labels to api and watcher services.

[alan-ghelardi]

/approve

[enarha]

@adambkaplan It looks we got enough approvals here. Can we merged this PR please.

[tekton-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: adambkaplan, alan-ghelardi, avinal, sayan-biswas

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