[tmp] Disable metricStorage

Alertmanager is causing the failures in the job:
message: 'pod alertmanager-metric-storage-1: 0/1 nodes are available: 1 node(s)
      didn''t match pod anti-affinity rules. preemption: 0/1 nodes are available:
      1 No preemption victims found for incoming pod..'

Author: elfiesmelfie

zuul.d/projects.yaml

@@ -29,7 +29,7 @@
                   enabled: true
                   template:
                     metricStorage:
-                      enabled: true
+                      enabled: false
                     autoscaling:
                       enabled: true
             target: