Disable argocd monitoring

When argocd monitoring is enabled and follwing the getting started
guide, the sync of the argocd application will fail, as the
cluster is missing certain prometheus CRDs.

Author: Fabian Fischer

params.yml

@@ -2,6 +2,11 @@ parameters:
   secret_management:
     vault_addr: https://vault.example.com
     vault_role: syn-cluster
+
+  argocd:
+    monitoring:
+      enabled: false
+
   commodore:
     jsonnet_libs:
       - name: kube-libsonnet