Support granular management policies

[lsviben]

Description of your changes

ManagementPolicy -> granular ManagementPolicies

Adds support for granular management policies described based on the design.

This is a breaking change for the management policies alpha feature. (ObserveOnly)

The old

spec:
  managmentPolicy: FullControl/ObserveOnly/OrphanOnDelete

is getting replaced by

spec: 
  managementPolicies: ["*", "Observe", "Create", "Update", "LateInitialize", "Delete"]

After applying the updated provider, the spec.managementPolicy field will be removed automatically, and the spec.managementPolicies: ["*"] will be defaulted. This is equivalent to FullControl but for resources using ObserveOnly and OrphanOnDelete the it meanst that the behavior changes.

Suggested migration if needed is to:

• pause your resources using non-default management policies before upgrading the provider version
• noting down which ones those are (could be by adding labels managementPolicy: x )
• upgrading provider version
• setting desired management policies on the marked ones (those with label managementPolicy)

initProvider

The new upjet version introduces the spec.initProvider field, which can be used to set fields which can replace spec.forProvider fields during resource creation.

In practice, how it works is that spec.initProvider and spec.forProvider are merged before writing the main.tf file, plus based on fields in spec.initProvider which are not in spec.forProvider we calculate a list of fields which are added to the ignore_changes terraform hook, to avoid them being used in updates.

Both new features are only active if the managementPolicy alplha feature flag is enabled.

** NOTE: This PR uses an unmerged branch of upjet, should be merged after it **

Fixes #334

I have:

• Run make reviewable test to ensure this PR is ready for review.

Running above crashes on my machine :(.

How has this code been tested

The granular policies were tested with crossplane-runtime gmp PR & crossplane/upjet#224. More details in the crossplane-runtime PR.

The initProvider was tested with initProvider upjet PR. More details there

[turkenf]

/test-examples="examples/container/nodepool.yaml"

[turkenf]

/test-examples="examples/container/cluster.yaml"

[turkenf]

/test-examples="examples/cloudplatform/serviceaccount.yaml"

[ulucinar]

/test-examples="examples/cloudplatform/serviceaccount.yaml"

[turkenf]

/test-examples="examples/cloudplatform/serviceaccount.yaml"

[ulucinar]

/test-examples="examples/cloudplatform/serviceaccount.yaml"

[ulucinar]

Thanks @lsviben, lgtm.

[turkenf]

Thank you @lsviben, LGTM.

[turkenf]

/test-examples="examples/cloudplatform/serviceaccount.yaml"