fix for issue-1711-: Metrics not getting update correctly for eventlistener_event_count

[sudhishmk]

fix for issue-1711-: Metrics not getting update correctly for eventlistener_event_count

Issue -: eventlistener_event_count metrics is not updated correctly

eventlistener_client_results{name=""} 34
# HELP eventlistener_event_count Number of events sent
# TYPE eventlistener_event_count counter
eventlistener_event_count{event_source="",event_type="",name="",namespace_name="",resource_group="",response_code="",response_code_class="",response_error="",response_timeout=""} 404
# HELP eventlistener_go_alloc The number of bytes of allocated heap objects

Metrics Output After the changes

# HELP eventlistener_event_received_count number of events received by sink
# TYPE eventlistener_event_received_count counter
eventlistener_event_received_count{status="succeeded"} 1

Fix -: Metric name updated from " eventlistener_event_count" to "eventlistener_event_received_count".
Docs updated

Release Notes

NONE

[sudhishmk]

/retest

[khrm]

@sudhishmk Can you run gofmt on the files? CI tests are failing due to this.

[sudhishmk]

@sudhishmk Can you run gofmt on the files? CI tests are failing due to this.

Done

[khrm]

/approve

[khrm]

/approve

[tekton-robot]

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[savitaashture]

/lgtm