cluster: display memory usage

[nexustar]

What problem does this PR solve?

What is changed and how it works?

• add --process flag to display subcommand to show memorg usage and quota

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:

NONE

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• AstroProfundis

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[codecov-commenter]

Codecov Report

Base: 23.47% // Head: 49.88% // Increases project coverage by +26.41% 🎉

Coverage data is based on head (5a51a83) compared to base (7e0cd81).
Patch coverage: 68.57% of modified lines in pull request are covered.

Additional details and impacted files

@@             Coverage Diff             @@
##           master    #1994       +/-   ##
===========================================
+ Coverage   23.47%   49.88%   +26.41%     
===========================================
  Files         285      309       +24     
  Lines       33266    36233     +2967     
===========================================
+ Hits         7808    18073    +10265     
+ Misses      24588    16111     -8477     
- Partials      870     2049     +1179     

Flag	Coverage Δ
cluster	41.43% <67.69%> (?)
dm	23.87% <40.35%> (?)
playground	12.99% <0.00%> (?)
tiup	?
unittest	20.57% <9.09%> (+<0.01%)	⬆️

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

Impacted Files	Coverage Δ
pkg/cluster/operation/action.go	66.04% <ø> (ø)
pkg/cluster/operation/check.go	47.42% <0.00%> (ø)
pkg/cluster/operation/operation.go	80.65% <ø> (ø)
pkg/cluster/manager/display.go	50.26% <61.76%> (+48.51%)	⬆️
components/cluster/command/display.go	44.29% <69.23%> (+15.30%)	⬆️
pkg/cluster/operation/systemd.go	73.91% <78.57%> (ø)
components/dm/command/display.go	46.67% <80.00%> (+11.11%)	⬆️
pkg/cluster/spec/instance.go	65.67% <100.00%> (+47.64%)	⬆️
pkg/cluster/task/action.go	75.86% <100.00%> (+75.86%)	⬆️
main.go	0.00% <0.00%> (-100.00%)	⬇️
... and 254 more

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[nexustar]

/merge

[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Commit hash: 8b0dd4f

[nexustar]

/merge