Persist interface hash on installation status

[carolynvs]

When porter is searching for existing installations to reuse to satisfy a dependency, we need a way to quickly filter installations to a subset that implement the desired installation interface.

I was thinking that we can persist a hash of the installation interface on the status of the installation (next to where we store the current bundle reference/version).

schemaType: Installation
...
status:
  bundleReference: example.com/mybuns:v1.2.3
  bundleVersion: 1.2.3
  bundleDigest: sha256:abc123
  installationInterfaceHash: sha256:def456

Questions

• We need to finalize exactly what is on the installation interface and it is the same as the bundle interface (i.e. does it include creds/params)

ℹ️ Read PEP003 - Advanced Dependencies for context about how dependencies should work, design details, and notes about desired behavior.