fix restoring finetune callbacks after accelerator setup on training resume

[eladsegal]

What does this PR do?

Fixes #8502

Does your PR introduce any breaking changes ? If yes, please list them.

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[pep8speaks]

Hello @eladsegal! Thanks for updating this PR. We checked the lines you've touched for PEP 8 issues, and found:

There are currently no PEP 8 issues detected in this Pull Request. Cheers! 🍻

Comment last updated at 2021-07-23 07:51:20 UTC

[codecov]

Codecov Report

Merging #8501 (5b09601) into master (0ad7f3a) will decrease coverage by 4%.
The diff coverage is 100%.

@@           Coverage Diff           @@
##           master   #8501    +/-   ##
=======================================
- Coverage      92%     88%    -4%     
=======================================
  Files         218     218            
  Lines       14390   14401    +11     
=======================================
- Hits        13278   12681   -597     
- Misses       1112    1720   +608     

[tchaton]

Dear @eladsegal ,

I have added a test on your branch and some minor fixes. Mind giving it a try to see if it fixes your problem ?

Best,
T.C

[eladsegal]

Dear @eladsegal ,

I have added a test on your branch and some minor fixes. Mind giving it a try to see if it fixes your problem ?

Best,
T.C

Thank you! I was planning on finalizing the pull request, but you were too quick :)
It does solve my problem

[awaelchli]

I'm changing the title of this PR to reflect that this is about the finetuning callback implementation :) 😇

[awaelchli]

LGTM overall
thanks @eladsegal and @tchaton for taking care of my negligence in #7652, I have not paid enough attention and should have seen that it breaks