decoupling enable symlink with skip check mount ready

[Syspretor]

In PR #4346 , we assumed that when fluid.io/skip-check-mount-ready-target: "MountPod" is configured, symlink must be used; however, this assumption is not accurate. The configuration that decide if mount status should be check and the symlink configuration are two independent atomic configurations, and each configuration can be used independently or in combination with the other as following.

apiVersion: data.fluid.io/v1alpha1
kind: ThinRuntime
metadata:
  name: demo
  annotations:
    fluid.io/skip-check-mount-ready-target: "MountPod"
    data.fluid.io/metadataList: `[{"Labels": {"fluid.io/node-publish-method": "symlink"}, "selector": { "kind": "PersistentVolume"}}]`
spec:
  profileName: demo

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[cheyang]

/lgtm
/approve

[fluid-e2e-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: cheyang

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS [cheyang]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment