Enhancing the logging framework for the check operator

[rahkumar651991]

What does this PR do?

It enhances the logging for check related operation to use user-provided logs.

What issues does this PR fix or reference?

#377 #364

Previous Behavior

If ID went missing in pre/post snapshot, hardcoded message were displayed

New Behavior

User-defined error/info log will be displayed.

[coveralls]

Pull Request Test Coverage Report for Build 363

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 308 unchanged lines in 4 files lost coverage.
• Overall coverage decreased (-0.1%) to 91.278%

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Files with Coverage Reduction	New Missed Lines	%
/home/travis/virtualenv/python3.5.6/lib/python3.5/site-packages/jnpr/jsnapy/operator.py	77	92.07%
/home/travis/virtualenv/python3.6.7/lib/python3.6/site-packages/jnpr/jsnapy/operator.py	77	92.07%
/home/travis/virtualenv/python3.7.1/lib/python3.7/site-packages/jnpr/jsnapy/operator.py	77	92.07%
/home/travis/virtualenv/python3.8.0/lib/python3.8/site-packages/jnpr/jsnapy/operator.py	77	92.08%

Totals
Change from base Build 361:	-0.1%
Covered Lines:	10298
Relevant Lines:	11282

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💛 - Coveralls