[DataLoader] Rename transform DataPipe to legacy_transform

[VitalyFedyunin]

Stack from ghstack:

• DataPipes and DataFrames integration #60840 [WIP] Example of DataPipes and DataFrames integration
• [DataLoader] Add notebook with DataPipes API example #60680 [DataLoader] Add notebook with DataPipes API example
• [DataLoader] Add Example Only fork DataPipe #60679 [DataLoader] Add Example Only fork DataPipe
• [DataLoader] Decorate ZipDataPipe as zip #60678 [DataLoader] Decorate ZipDataPipe as zip
• [DataLoader] Add simple groupby DataPipe #60675 [DataLoader] Add simple groupby DataPipe
• [DataLoader] Make batch DataPipe sensitive to unbatch_level argument #60672 [DataLoader] Make batch DataPipe sensitive to unbatch_level argument
• [DataLoader] Make shuffle DataPipe sensitive to unbatch_level argument #60671 [DataLoader] Make shuffle DataPipe sensitive to unbatch_level argument
• [DataLoader] Rename transform DataPipe to legacy_transform #60670 [DataLoader] Rename transform DataPipe to legacy_transform

Differential Revision: D29461081

[facebook-github-bot]

💊 CI failures summary and remediations

As of commit ede4d28 (more details on the Dr. CI page and at hud.pytorch.org/pr/60670):

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• 4/4 failures possibly* introduced in this PR
  • 1/4 non-scanned failure(s)

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3 failures not recognized by patterns:

Job	Step	Action
Windows CI (pytorch-win-vs2019-cuda10-cudnn7-py3) / test (1)	Install Visual Studio 2019 toolchain	🔁 rerun
Windows CI (pytorch-win-vs2019-cuda10-cudnn7-py3) / test (2)	Install Visual Studio 2019 toolchain	🔁 rerun
Lint / clang-tidy	Generate build files	🔁 rerun

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[ejguan]

LGTM

[VitalyFedyunin]

@VitalyFedyunin has imported this pull request. If you are a Facebook employee, you can view this diff on Phabricator.

[VitalyFedyunin]

@VitalyFedyunin has imported this pull request. If you are a Facebook employee, you can view this diff on Phabricator.

[VitalyFedyunin]

@VitalyFedyunin has imported this pull request. If you are a Facebook employee, you can view this diff on Phabricator.

[codecov]

Codecov Report

Merging #60670 (ede4d28) into gh/VitalyFedyunin/161/base (d46eb77) will increase coverage by 14.00%.
The diff coverage is 100.00%.

@@                       Coverage Diff                       @@
##           gh/VitalyFedyunin/161/base   #60670       +/-   ##
===============================================================
+ Coverage                       62.18%   76.18%   +14.00%     
===============================================================
  Files                            2014     2062       +48     
  Lines                          203862   205648     +1786     
===============================================================
+ Hits                           126778   156681    +29903     
+ Misses                          77084    48967    -28117     

[facebook-github-bot]

@VitalyFedyunin merged this pull request in a652398.