refactory updating status mechanism, status func could handle error

[xuzhenglun]

What this PR does / why we need it:

related with #197:

1. refractory mechanism of updating status: a. allow status Reconciled method known if error happened, so that user could be able to submit an error to CR status field or launch an Event; b. maybe it's related with #190

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Additional documentation:

[k8s-ci-robot]

Hi @xuzhenglun. Thanks for your PR.

I'm waiting for a kubernetes-sigs member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[atoato88]

/ok-to-test

[xuzhenglun]

/test

[k8s-ci-robot]

@xuzhenglun: The /test command needs one or more targets. The following commands are available to trigger required jobs:

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Use /test all to run all jobs.

In response to [this](https://github.com/kubernetes-sigs/kubebuilder-declarative-pattern/pull/199#issuecomment-1022802277): >/test Instructions for interacting with me using PR comments are available [here](https://git.k8s.io/community/contributors/guide/pull-requests.md). If you have questions or suggestions related to my behavior, please file an issue against the [kubernetes/test-infra](https://github.com/kubernetes/test-infra/issues/new?title=Prow%20issue:) repository.

[xuzhenglun]

/test all

[atoato88]

/lgtm I think contents of this PR don't have any side effects, so It's OK. Reconciled function doesn't use error object on 4th args at here and here. But on other PR, we can use this object to write more information on status, I think.

[atoato88]

/assign @justinsb Could you review this?

[xuzhenglun]

@justinsb please take a look when you are convenient.

[atoato88]

/approve This is good update for this repository and confirmed that tests past successfully. I approve this.

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: atoato88, xuzhenglun

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Needs approval from an approver in each of these files: - ~~[OWNERS](https://github.com/kubernetes-sigs/kubebuilder-declarative-pattern/blob/master/OWNERS)~~ [atoato88] Approvers can indicate their approval by writing `/approve` in a comment Approvers can cancel approval by writing `/approve cancel` in a comment