Couple of tweaks for asr2.sh for the HF hub upload

[akreal]

What?

• Set the lang variable
• Enable LFS tracking for *.mdl files

Why?

• I think setting the language variable is needed (HF hub complains when language is set to noinfo).
• I'm not sure if setting the LFS tracking for *.mdl files is needed. Does it work without it for everyone else? I have not investigated what is the expected behaviour here, but in my environment HF hub complained that *.mdl is not under LFS.

[codecov]

Codecov Report

Merging #5362 (a00b287) into master (890ba71) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #5362   +/-   ##
=======================================
  Coverage   76.11%   76.11%           
=======================================
  Files         672      672           
  Lines       59859    59859           
=======================================
  Hits        45563    45563           
  Misses      14296    14296           

Flag	Coverage Δ
test_configuration_espnet2	∅ <ø> (∅)
test_integration_espnet1	65.93% <ø> (ø)
test_integration_espnet2	47.92% <ø> (ø)
test_python_espnet1	20.51% <ø> (ø)
test_python_espnet2	51.35% <ø> (ø)
test_utils	23.17% <ø> (ø)

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[simpleoier]

Thanks! This modification is very necessary.

[sw005320]

Thanks a lot!