feat: Operator - Add feastProjectDir section to CR with git & init options

[tchughesiv]

What this PR does / why we need it:

Adds git and init capabilities to the Operator for feast project/repo directories. When used, the Operator will configure a FeatureStore Pod's initContainer to either clone the feast repo via git, or create a new feast project directory w/ the feast init command.

Which issue(s) this PR fixes:

Fixes #5078

Misc

Clone a git repo at a certain commit -

apiVersion: feast.dev/v1alpha1
kind: FeatureStore
metadata:
  name: sample-git
spec:
  feastProject: credit_scoring_local
  feastProjectDir:
    git:
      url: https://github.com/feast-dev/feast-credit-score-local-tutorial
      ref: 598a270

Clone a private git repo w/ an access token -

kind: Secret
apiVersion: v1
metadata:
  name: git-token
stringData:
  TOKEN: xxxxxxxxxxx
---
apiVersion: feast.dev/v1alpha1
kind: FeatureStore
metadata:
  name: sample-git-token
spec:
  feastProject: private
  feastProjectDir:
    git:
      configs:
        'url."https://api:${TOKEN}@github.com/".insteadOf': 'https://github.com/'
      envFrom:
        - secretRef:
            name: git-token
      url: 'https://github.com/user/private'

Initialize a new project directory w/ the spark template -

apiVersion: feast.dev/v1alpha1
kind: FeatureStore
metadata:
  name: sample-init
spec:
  feastProject: sample_init
  feastProjectDir:
    init:
      template: spark

[redhatHameed]

WDYT ? moving FeastProject and FeastProjectDir under ProjectSettings struct ?

type ProjectSettings struct {
    FeastProject    string           `json:"feastProject"`
    FeastProjectDir *FeastProjectDir `json:"feastProjectDir,omitempty"`
}

[tchughesiv]

that would be a breaking change... would break the CRD... even more-so because its a required field. it would also be a bit odd to have a required field that's another level down.

[redhatHameed]

@tchughesiv WDYT adding example of when name feature repo directory different then feature_repo

[tchughesiv]

@redhatHameed agree... was actually just working on that

[redhatHameed]

@tchughesiv Thanks for adding this feature.

[tmihalac]

Does this test cover all the new options? the feast init parameters and github ?

[tchughesiv]

this one tests the git options... the next one tests the init ones -

feast/infra/feast-operator/internal/controller/featurestore_controller_test.go

Line 265 in d64f01e

// change projectDir to use an init template