Feat:support dynamic mount of subpath format JuiceFS mount-points

[Syspretor]

Ⅰ. Describe what this PR does

Previously, dynamic-mount is supported in Version 1.0.9, users can configure the juicefs mount-point in dataset dynamically, however only the root dir can be configured. This pull request optimizes the parameter parsing logic in the juicefs mount script to support the subpath configuration of juicefs mount-points.

Ⅱ. Does this pull request fix one issue?

NONE

Ⅲ. List the added test cases (unit test/integration test) if any, please explain if no tests are needed.

No tests was added.

Ⅳ. Describe how to verify it

Specify the following mount point configuration in dynamic-mount dataset, the subpath of juicefs volume can be dynamic mounted.

  - mountPoint: juicefs://$volume-name/$volume-subpath-1/.../
    name: juicefs-volume
    path: /subpath

[sonarqubecloud]

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

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