Disable wait on foundation kustomizations to fix startup delays

Root cause: Flux dependency polling causes cascading delays during startup.
When wait:true is enabled, each kustomization waits for health checks AND
dependencies use 30s polling intervals instead of immediate reconciliation.

Issue: fluxcd/kustomize-controller#1412
- Dependencies poll every 30s instead of reacting to ready events
- Status becomes stale, showing "dependency not ready" even when ready
- Cascading effect: each layer adds 30-60s delay
- Total startup time: 5-10 minutes instead of <1 minute

Solution: Disable wait on foundation-layer kustomizations:
- snapshot-controller: Creates CRDs and controller (no health check needed)
- ceph-csi (app): Creates namespace only (already fixed in parent)
- external-secrets: Creates CRDs and operator (dependencies handle health)

Impact:
- Startup time reduced from minutes to seconds
- Dependencies still enforced (dependsOn unchanged)
- Child kustomizations still wait for parents
- Health checks happen at application layer, not infrastructure

The dependency chain remains intact:
1. CRDs deploy immediately (no wait)
2. Operators deploy immediately after CRDs (no wait)
3. Applications wait for operators via dependencies
4. Storage classes wait for CSI drivers

Author: sulibot

kubernetes/apps/2-foundation/ceph-csi/app/ks.yaml

@@ -25,7 +25,7 @@ spec:
     name: flux-system
     namespace: flux-system
   targetNamespace: ceph-csi
-  wait: true
+  wait: false
   timeout: 5m
   retryInterval: 30s
   decryption:

kubernetes/apps/2-foundation/external-secrets/external-secrets/ks.yaml

@@ -18,7 +18,7 @@ spec:
     name: flux-system
     namespace: flux-system
   targetNamespace: external-secrets
-  wait: true
+  wait: false
   timeout: 5m
   retryInterval: 30s
   healthChecks:

kubernetes/apps/2-foundation/snapshot-controller/ks.yaml

@@ -20,6 +20,6 @@ spec:
     name: flux-system
     namespace: flux-system
   targetNamespace: snapshot-controller
-  wait: true
+  wait: false
   timeout: 5m
   retryInterval: 30s