Make app provisioning wait for role assignments and private endpoints

[Copilot]

Description

Container apps and web sites can be provisioned before their role assignments are ready, causing connectivity failures on startup. The pipeline ordering didn't enforce that provision-{app}-roles-* steps complete before provision-{app}-containerapp/provision-{app}-website.

Before: provision-api-website runs concurrently with provision-api-roles-kv

[5] provision-api-roles-kv | provision-env (parallel)
[6] push-prereq
[7] push-api
[8] provision-api-website  ← deployed before roles are ready

After: provision-api-website depends on provision-api-roles-kv

[5] provision-api-roles-kv | provision-env (parallel)
[6] push-prereq
[7] push-api
[8] provision-api-website  ← waits for roles

• Added role assignment dependency resolution in PipelineConfigurationAnnotation for both AzureContainerAppResource and AzureAppServiceWebSiteResource
• Finds role assignment resources by matching {targetResource.Name}-roles-* against the model (the naming convention used by AzureResourcePreparer.CreateRoleAssignmentsResources)
• Updated snapshot tests to reflect corrected dependency ordering

Checklist

• Is this feature complete?
  • Yes. Ready to ship.
  • No. Follow-up changes expected.
• Are you including unit tests for the changes and scenario tests if relevant?
  • Yes
  • No
• Did you add public API?
  • Yes
  • No
• Does the change make any security assumptions or guarantees?
  • Yes
  • No
• Does the change require an update in our Aspire docs?
  • Yes
  • No

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• aka.ms
  • Triggering command: /usr/local/bin/bicep /usr/local/bin/bicep build /tmp/aspire-bicepbNOkdL/api-identity.module.bicep --stdout (dns block)
  • Triggering command: /usr/local/bin/bicep /usr/local/bin/bicep build /tmp/aspire-bicepmtHiDg/env-acr.module.bicep --stdout (dns block)
  • Triggering command: /usr/local/bin/bicep /usr/local/bin/bicep build /tmp/aspire-bicepwj1Xbm/kv.module.bicep --stdout (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

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This section details on the original issue you should resolve

<issue_title>Apps need to wait to be provisioned until all the roles, private endpoints, etc of their references are provisioned</issue_title>
<issue_description>Today when an application is deployed, it can be provisioned before the resource it references is fully ready for it to be connected to. For example, if the role assignments aren't provisioned yet, or the private endpoints aren't provisioned yet, the app could be deployed to ACA but not work because the resources needed in order for it to connect to Azure services are not there yet.

In the example below, I'm updating my app with an Azure Key Vault. You can see the keyvault is provisioned first, then the provision-server-containerapp is started before the provision-server-roles-keyvault starts. This means the new version of the app could be ready before the role assignments are there to give it access.

Private endpoints make this problem even worse because they take longer to provision.

18:02:28 (provision-keyvault) ✓ Successfully provisioned keyvault (43.0s)
18:02:28 (provision-keyvault) ✓ provision-keyvault completed successfully
18:02:28 (provision-server-containerapp) → Starting provision-server-containerapp...
18:02:28 (provision-server-containerapp) → Deploying server-containerapp
18:02:28 (provision-server-roles-keyvault) → Starting provision-server-roles-keyvault...
18:02:28 (provision-server-roles-keyvault) → Deploying server-roles-keyvault
18:02:35 (provision-server-roles-keyvault) ✓ Successfully provisioned server-roles-keyvault (7.4s)
18:02:35 (provision-server-roles-keyvault) ✓ provision-server-roles-keyvault completed successfully
18:03:06 (provision-server-containerapp) ✓ Successfully provisioned server-containerapp (38.6s)
18:03:06 (provision-server-containerapp) ✓ provision-server-containerapp completed successfully
18:03:06 (print-server-summary) → Starting print-server-summary...
18:03:06 (print-server-summary) i [INF] Successfully deployed server to https://server.yellowsmoke-60a1f25c.westus3.azurecontainerapps.io
18:03:06 (print-server-summary) ✓ print-server-summary completed successfully
18:03:29 (provision-privatelink-vaultcore-azure-net) ✓ Successfully provisioned privatelink-vaultcore-azure-net (104.6s)
18:03:29 (provision-privatelink-vaultcore-azure-net) ✓ provision-privatelink-vaultcore-azure-net completed successfully
18:03:29 (provision-pe-subnet-keyvault-pe) → Starting provision-pe-subnet-keyvault-pe...
18:03:29 (provision-pe-subnet-keyvault-pe) → Deploying pe-subnet-keyvault-pe
18:04:41 (provision-pe-subnet-keyvault-pe) ✓ Successfully provisioned pe-subnet-keyvault-pe (71.3s)
18:04:41 (provision-pe-subnet-keyvault-pe) ✓ provision-pe-subnet-keyvault-pe completed successfully

We need to order the pipeline steps in such a way that all the role assignments and private endpoints need to be provisioned before the app can be provisioned.</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Apps need to wait to be provisioned until all the roles, private endpoints, etc of their references are provisioned #14482

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