aks-manifest bicep module fixes

[geoberle]

this PR adresses several bugs in the aks-manifest module and its usage for serviceaccount placement

• ServiceAccount are now generated with their correct metadata.name. previously the uamiName was used instead of the serviceAccountName
• the aks-manifest can now handle non-namespaced manifests
• the aks-manifest deploymentjobs are now re-executed when the manifests to apply change.

What this PR does

Before this PR:

After this PR:

Jira:
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• PR: The PR description is expressive enough and will help future contributors
• Code: Write code that humans can understand and Keep it simple
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• Upgrade: Impact of this change on upgrade flows was considered and addressed if required
• Deployment: The deployment process was considered and addressed if required
• Testing: New code requires new unit tests.
• Documentation: Is the documentation updated? Either in the doc located in focus area, in the README or in the code itself.
• Customers: Is this change affecting customers? Is the release plan considered?