Addition of logs to scanWorkflows in shadower

[abhishekj720]

What changed? Added logs to scanWorflow methods

Why?

• Adding it to check what query has been passed and has been broken in the process.
• When running shadower, it says invalid query. So, adding this will tell where the problem is.

How did you test it? Just adding logs. Will be adding the tests in later diffs.

Potential risks N/A, as these are just few logs.

[agautam478]

LGTM. Approving because we urgently need these logs to debug the issues with internal shadower.

[coveralls]

Pull Request Test Coverage Report for Build 2440

Details

• 22 of 22 (100.0%) changed or added relevant lines in 1 file are covered.
• 1 unchanged line in 1 file lost coverage.
• Overall coverage increased (+0.08%) to 62.031%

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Files with Coverage Reduction	New Missed Lines	%
src/main/java/com/uber/cadence/internal/sync/WorkflowThreadImpl.java	1	77.32%
<!--	Total:	1		-->

Totals
Change from base Build 2433:	0.08%
Covered Lines:	12098
Relevant Lines:	19503

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💛 - Coveralls

[abhishekj720]

Some build issue.