fix: Verify the input GPU limit value

Created by: weili520

Signed-off-by: TheYoungManLi cjl@kubesphere.io

What type of PR is this?

/kind bug

What this PR does / why we need it:

Verify the input GPU limit value and cancel Gpu input number limit

Which issue(s) this PR fixes:

Fixes ##2484 (closed)

Special notes for reviewers:

https://user-images.githubusercontent.com/33231138/138659702-8ae6827f-8fbb-4145-9f4f-65184c4be8a9.mov

Does this PR introduced a user-facing change?

NONE

Additional documentation, usage docs, etc.: