fix cluster-utilization cronjob environment value type issue (#5325)

Author: suiguoxin

src/alert-manager/deploy/alert-manager-cronjob.yaml.template

@@ -40,7 +40,7 @@ spec:
             - name: PAI_BEARER_TOKEN
               value: {{ cluster_cfg["alert-manager"]["alert-handler"]["pai-bearer-token"] }}
             - name: PROMETHEUS_SCRAPE_INTERVAL
-              value: {{ cluster_cfg["prometheus"]["scrape_interval"] }}
+              value: "{{ cluster_cfg["prometheus"]["scrape_interval"] }}"
           imagePullSecrets:
           - name: {{ cluster_cfg["cluster"]["docker-registry"]["secret-name"] }}
           restartPolicy: OnFailure

src/alert-manager/src/cluster-utilization/send_alert.py

@@ -15,7 +15,7 @@
 REST_JOB_API_PREFIX = "/rest-server/api/v2/jobs"
 
 TOKEN = os.environ.get('PAI_BEARER_TOKEN')
-PROMETHEUS_SCRAPE_INTERVAL = os.environ.get('PROMETHEUS_SCRAPE_INTERVAL')
+PROMETHEUS_SCRAPE_INTERVAL = int(os.environ.get('PROMETHEUS_SCRAPE_INTERVAL'))
 
 def enable_request_debug_log(func):
     def wrapper(*args, **kwargs):