AKS Engine Custom VM Images from different subscription

notes.md

Custom VM Images from different subscription

Required changes

• add subscriptionId to customImage type
• add subscription id to template
• either always set subId (whether provided or not), or only put sub in arm template when provided

Test cases

• Providing Master custom image in another subscription should work
• Providing Agent custom image in another subscription should work
• Both agent and master custom images should work
• Should work with master VMSS
• Should work with master VMAS
• Should work with agent VMAS
• Should work with master VMSS
• Don't regress existing behavior. Add validation for RG only if it doesn't exist.
• Add validation that specified RG is in the sub (?)
• Using mismatched locations should fail fast (?)

v2.md

Shared Image Gallery (v2) implementation

• Add gallery, imageVersion to types and serialization/conversion
• Fail fast if SP does not have access to resource (?)