Merge pull request #58090 from serathius/pass-location-to-event-exporter

Automatic merge from submit-queue (batch tested with PRs 60054, 60202, 60219, 58090, 60275). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Pass location parameter to event exporter.

**What this PR does / why we need it**:
This PR makes event-exporter export cluster location together with events.

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

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```

cluster/addons/fluentd-gcp/event-exporter.yaml

@@ -49,7 +49,8 @@ spec:
       - name: event-exporter
         image: k8s.gcr.io/event-exporter:v0.1.8
         command:
-        - '/event-exporter'
+        - /event-exporter
+        - -sink-opts="-location={{ event_exporter_zone }}"
       # BEGIN_PROMETHEUS_TO_SD
       - name: prometheus-to-sd-exporter
         image: k8s.gcr.io/prometheus-to-sd:v0.2.4