[crmsh-5.0] Dev: sbd: Check if fence-agents-sbd is installed

[liangxin1300]

Backport from master branch:

• Dev: sbd: Check if fence-agents-sbd is installed on all nodes #1905
• Dev: sbd: Check if fence-agents-sbd is installed for other cases #1907

[codecov]

Codecov Report

❌ Patch coverage is 69.56522% with 7 lines in your changes missing coverage. Please review.
✅ Project coverage is 70.78%. Comparing base (43a7e14) to head (8abb4e7).
⚠️ Report is 6 commits behind head on crmsh-5.0.

Files with missing lines	Patch %	Lines
crmsh/bootstrap.py	66.66%	4 Missing ⚠️
crmsh/sbd.py	72.72%	3 Missing ⚠️

Additional details and impacted files

Flag	Coverage Δ
integration	55.23% <8.69%> (-0.02%)	⬇️
unit	52.99% <65.21%> (+<0.01%)	⬆️

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

Files with missing lines	Coverage Δ
crmsh/sbd.py	86.65% <72.72%> (-0.27%)	⬇️
crmsh/bootstrap.py	89.41% <66.66%> (-0.03%)	⬇️

... and 1 file with indirect coverage changes

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[liangxin1300]

16.0 will have a long maintenance window, so I plan to backport essential and low-risk pull requests from master. This will keep the 16.0 branch up-to-date and make ongoing development easier.
@zzhou1 @nicholasyang2022