☂️ [GEP-25] Introduce `NamespacedCloudProfile`s

[Tim Usner]

How to categorize this issue?

/area usability
/kind enhancement

What would you like to be added:
In order to introduce NamespacedCloudProfiles (see GEP-25) the following tasks need to be done:

• Gardener Enhancement Proposal #9142
• API Changes #9440
• Adjust admission controller of known providers (after vendored to API adjustments)
  • Alicloud
  • AWS
  • Azure
  • GCP
  • OpenStack
• Gardener adjustments
  • Default shoot.spec.cloudProfile.kind to CloudProfile
  • Adjust admission plugins
  • Adjust SeedAuthorizer
  • Adjust Cluster resource handling
  • Add NamespacedCloudProfile controller
• Migrate shoot.spec.cloudProfileName to cloudProfile field if feature is enabled
  • Transfer field information
  • Automatically set shoot.spec.cloudProfile when shoot.spec.cloudProfileName is configured
• Garduate feature gate to beta
• Garduate feature gate to GA
• Deprecate shoot.spec.cloudProfileName field

[Tim Usner]

/assign

[Luca Bernstein]

/assign