update troubleshooting items and how to patch along with the new 2.8 release

[xiangjingli]

• I have taken backward compatibility into consideration.

[openshift-ci]

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[codecov]

Codecov Report

Patch coverage has no change and project coverage change: -0.80 ⚠️

Comparison is base (fa39a85) 55.15% compared to head (23c6a1f) 54.36%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #354      +/-   ##
==========================================
- Coverage   55.15%   54.36%   -0.80%     
==========================================
  Files          71       71              
  Lines       14924    14924              
==========================================
- Hits         8231     8113     -118     
- Misses       5874     5987     +113     
- Partials      819      824       +5     

Flag	Coverage Δ
unit	54.36% <ø> (-0.80%)	⬇️

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see 8 files with indirect coverage changes

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