Fix: ra: Prevent to add unknown operation (bsc#1236442)

[liangxin1300]

• When adding unknown operation, sanity check should give an error instead of a warning
• Create enum class utils.VerifyResult to represent the return value of verify functions, include SUCCESS, WARNING, NON_FATAL_ERROR and FATAL_ERROR
• sanity check will return utils.VerifyResult.FATAL_ERROR to indicate this is a fatal
  error, so that the commit process will be aborted

[codecov]

Codecov Report

Attention: Patch coverage is 90.00000% with 1 line in your changes missing coverage. Please review.

Project coverage is 69.74%. Comparing base (e63ac0b) to head (eb8e9fc).

Files with missing lines	Patch %	Lines
crmsh/utils.py	0.00%	1 Missing ⚠️

Additional details and impacted files

Flag	Coverage Δ
integration	53.56% <90.00%> (+0.03%)	⬆️
unit	53.07% <10.00%> (-0.01%)	⬇️

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

Files with missing lines	Coverage Δ
crmsh/constants.py	100.00% <100.00%> (ø)
crmsh/ra.py	53.45% <100.00%> (+0.46%)	⬆️
crmsh/ui_configure.py	45.05% <100.00%> (+0.31%)	⬆️
crmsh/utils.py	66.49% <0.00%> (ø)

... and 2 files with indirect coverage changes

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[nicholasyang2022]

1. It is invalid to use bitwise-or operation with a series defined as 0, 1, 2, 3, ....
2. Please use enum instead instead of standalone integers.