Dev: utils: Load CIB_file env before some readonly commands

[liangxin1300]

When cluster is not running, load CIB_file environment variable before some readonly commands to avoid the error message. (issue #1499 )

Current affected commands:

• crm configure show
• crm configure get_property
• crm configure verify
• crm node show
• crm node server

[codecov]

Codecov Report

Attention: Patch coverage is 75.00000% with 3 lines in your changes missing coverage. Please review.

Project coverage is 69.72%. Comparing base (6239959) to head (687af2f).
Report is 7 commits behind head on master.

Files with missing lines	Patch %	Lines
crmsh/ui_node.py	0.00%	2 Missing ⚠️
crmsh/ui_configure.py	66.66%	1 Missing ⚠️

Additional details and impacted files

Flag	Coverage Δ
integration	54.57% <75.00%> (+<0.01%)	⬆️
unit	52.37% <8.33%> (-0.03%)	⬇️

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

Files with missing lines	Coverage Δ
crmsh/utils.py	68.31% <100.00%> (+0.11%)	⬆️
crmsh/ui_configure.py	45.09% <66.66%> (+0.07%)	⬆️
crmsh/ui_node.py	43.62% <0.00%> (-0.23%)	⬇️

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