apis: add allocateOnce in reservation

[saintube]

Signed-off-by: saintube saintube@foxmail.com

Ⅰ. Describe what this PR does

Update with allocateOnce API in Reservation.

Ⅱ. Does this pull request fix one issue?

#440

Ⅲ. Describe how to verify it

Ⅳ. Special notes for reviews

V. Checklist

• I have written necessary docs and comments
• I have added necessary unit tests and integration tests
• All checks passed in make test

[saintube]

/assign @eahydra @hormes @jasonliu747 @buptcozy

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In response to this:

/assign @eahydra @hormes @jasonliu747 @buptcozy

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[codecov]

Codecov Report

Merging #447 (806de21) into main (361c0c6) will increase coverage by 0.04%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main     #447      +/-   ##
==========================================
+ Coverage   67.88%   67.93%   +0.04%     
==========================================
  Files         137      137              
  Lines       14980    14980              
==========================================
+ Hits        10169    10176       +7     
+ Misses       4051     4044       -7     
  Partials      760      760              

Flag	Coverage Δ
unittests	67.93% <ø> (+0.04%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
pkg/koordlet/runtimehooks/reconciler/reconciler.go	78.94% <0.00%> (+7.36%)	⬆️

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[eahydra]

/lgtm

[hormes]

/approve

[koordinator-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: hormes

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