feat: Add CronJob capability to the Operator (feast apply & materialize-incremental)

[tchughesiv]

What this PR does / why we need it:

With this PR, the Operator will, by default, create a CronJob in suspended state. This default CronJob will execute the following commands (in order) when manually executed -

• feast apply
• feast materialize-incremental $(date -u +'%Y-%m-%dT%H:%M:%S')

All Job commands are executed within a deployed Feature Store's running Pod.
In order to manually run this Job, the following command can be executed against the FeatureStore CR namespace -

# first we get the operator-deployed CronJob name for our installed FeatureStore CR
$ kubectl get feast/example -o template --template={{.status.cronJob}}                                                                     
feast-example

# next, we run a Job in-cluster, templated from that CronJob
$ kubectl create job --from=cronjob/feast-example feast-example-job

Additionally, the Operator supports the ability to customize the CronJob to a user's liking. A user could change commands the CronJob executes and/or run it on a schedule, among other things.

For example, a user may instead want a materialize-incremental Job that runs on the hour -

spec:
  cronJob:
    containerConfigs:
      commands:
        - 'feast materialize-incremental $(date -u +''%Y-%m-%dT%H:%M:%S'')'
    schedule: 0 * * * *

Or maybe they want a Job that, after an apply & materialize-incremental, will also install a python project's dependencies and run a script -

spec:
  cronJob:
    containerConfigs:
      commands:
        - feast apply
        - 'feast materialize-incremental $(date -u +''%Y-%m-%dT%H:%M:%S'')'
        - pip install -r ../requirements.txt
        - cd ../ && python run.py
  feastProjectDir:
    git:
      ref: 598a270
      url: 'https://github.com/feast-dev/feast-credit-score-local-tutorial'

Which issue(s) this PR fixes:

Fixes #5220

Misc

This PR adds another image dependency in quay.io/openshift/origin-cli:4.17. We also update the operator-quickstart to lean on this new Job capability for much of the Demo notebook.