Fix: report: Check corosync.service status before querying quorum status (bsc#1235930)

[liangxin1300]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 69.76%. Comparing base (9dcea10) to head (5f87e3a).
Report is 3 commits behind head on master.

Additional details and impacted files

Flag	Coverage Δ
integration	53.55% <0.00%> (+<0.01%)	⬆️
unit	53.11% <100.00%> (+0.02%)	⬆️

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Files with missing lines	Coverage Δ
crmsh/report/collect.py	97.91% <100.00%> (+1.22%)	⬆️

... and 2 files with indirect coverage changes

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