Fix WB VMStack standalone install

clusters/wb/infrastructure/patches/vmstack.yaml

@@ -13,6 +13,9 @@ spec:
     fullnameOverride: vmstack
     defaultRules:
       create: true
+    victoria-metrics-operator:
+      admissionWebhooks:
+        enabled: false
     vmsingle:
       enabled: true
       spec:
@@ -29,6 +32,9 @@ spec:
       enabled: false
     vmagent:
       enabled: true
+      spec:
+        remoteWrite:
+          - url: http://vmsingle-vmstack.vmstack.svc.cluster.local.:8428/api/v1/write
     vmalert:
       enabled: true
       spec: