Feature/add log dir

[9547]

What problem does this PR solve?

fix #897

What is changed and how it works?

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No code

Code changes

• Has exported function/method change
• Has exported variable/fields change
• Has interface methods change
• Has persistent data change

Side effects

• Possible performance regression
• Increased code complexity
• Breaking backward compatibility

Related changes

• Need to cherry-pick to the release branch
• Need to update the documentation

Release notes:

Add `$TIUP_LOG_PATH` to store log file

[codecov-io]

Codecov Report

Merging #908 (827edaf) into master (f9591eb) will decrease coverage by 0.02%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master     #908      +/-   ##
==========================================
- Coverage   53.17%   53.14%   -0.03%     
==========================================
  Files         260      260              
  Lines       18909    18911       +2     
==========================================
- Hits        10055    10051       -4     
- Misses       7317     7327      +10     
+ Partials     1537     1533       -4     

Flag	Coverage Δ
cluster	45.17% <0.00%> (-0.05%)	⬇️
dm	25.12% <0.00%> (+0.06%)	⬆️
integrate	47.73% <0.00%> (-0.03%)	⬇️
playground	22.17% <ø> (ø)
tiup	10.70% <ø> (ø)
unittest	21.52% <0.00%> (ø)

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

Impacted Files	Coverage Δ
cmd/env.go	92.30% <ø> (ø)
components/cluster/command/root.go	45.50% <0.00%> (ø)
components/dm/command/root.go	54.54% <0.00%> (ø)
pkg/logger/debug.go	16.66% <0.00%> (-2.09%)	⬇️
pkg/utils/retry.go	42.10% <0.00%> (-15.79%)	⬇️
pkg/cluster/spec/tikv.go	55.94% <0.00%> (-1.49%)	⬇️
pkg/cluster/api/pdapi.go	61.60% <0.00%> (+0.92%)	⬆️
pkg/cluster/api/dmapi.go	60.00% <0.00%> (+1.73%)	⬆️

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[lucklove]

LGTM