Allow merge the existing description/workaround in errors.toml

[lonng]

Signed-off-by: Lonng [email protected]

What problem does this PR solve?

Allow merge the existing description/workaround in errors.toml

What is changed and how it works?

Open the existing errors.toml and merge the description/workaround if the previous error metafile contains these values.

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)

Release notes:

NONE

[codecov-io]

Codecov Report

Merging #867 into master will decrease coverage by 31.93%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           master     #867       +/-   ##
===========================================
- Coverage   53.06%   21.12%   -31.94%     
===========================================
  Files         263      234       -29     
  Lines       19038    17223     -1815     
===========================================
- Hits        10102     3638     -6464     
- Misses       7370    13072     +5702     
+ Partials     1566      513     -1053     

Flag	Coverage Δ
#cluster	?
#dm	?
#integrate	10.77% <ø> (-37.17%)	⬇️
#playground	?
#tiup	10.77% <ø> (ø)
#unittest	20.96% <ø> (ø)

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

Impacted Files	Coverage Δ
pkg/meta/paths.go	0.00% <0.00%> (-100.00%)	⬇️
pkg/utils/utils.go	0.00% <0.00%> (-100.00%)	⬇️
components/dm/main.go	0.00% <0.00%> (-100.00%)	⬇️
pkg/logger/log/log.go	0.00% <0.00%> (-100.00%)	⬇️
pkg/cluster/prepare.go	0.00% <0.00%> (-100.00%)	⬇️
components/cluster/main.go	0.00% <0.00%> (-100.00%)	⬇️
components/dm/spec/bindversion.go	0.00% <0.00%> (-100.00%)	⬇️
pkg/cluster/template/config/config.go	0.00% <0.00%> (-100.00%)	⬇️
pkg/cluster/template/scripts/scripts.go	0.00% <0.00%> (-100.00%)	⬇️
pkg/cluster/task/builder.go	0.00% <0.00%> (-97.11%)	⬇️
... and 191 more

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[july2993]

LGTM
release note should know what component updated.
and I think the user no need to know about this errdoc-gen

[lucklove]

LGTM