fix: if the capability cpu or memory is not specified in the hierarchical queue, it will be set to the corresponding value of the parent queue

[JesseStutler]

fix #3914

validation

1. Set the log level of volcano-scheduler to 4
2. Create a parent-queue, with capability CPU 100, memory 10Gi
3. Create a child-queue, with capability memory 5Gi
4. Check if there are any logs related with Failed to check queue's hierarchical structure

Results:
Hierarchical structure can be successfully checked in capacity plugin, without Failed to check queue's hierarchical structure log:

[JesseStutler]

/cc @Monokaix @hwdef @lowang-bh @googs1025 @archlitchi , please have a review thanks

[lowang-bh]

does scalarResources has same issue?

[JesseStutler]

The modification here is just for the convenience of using in UT without passing cpu or memory. You can see that scalarResources is a slice. If it is an empty slice or nil, resourceList will not be assigned.

[lowang-bh]

/ok-to-test

[hwdef]

/lgtm

[JesseStutler]

cc @Monokaix

[volcano-sh-bot]

New changes are detected. LGTM label has been removed.

[volcano-sh-bot]

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