Add tests for PollerAutoScalerOptions.java

[fimanishi]

What changed?
Added tests for PollerAutoScalerOptions.java

Why?
Code coverage

How did you test it?
Unit tests

Potential risks

Release notes

Documentation Changes

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 74.38%. Comparing base (f609320) to head (5b1c639).
Report is 3 commits behind head on master.

Additional details and impacted files

see 10 files with indirect coverage changes

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[coveralls]

Pull Request Test Coverage Report for Build 2644

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 13 unchanged lines in 1 file lost coverage.
• Overall coverage decreased (-0.001%) to 80.295%

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Files with Coverage Reduction	New Missed Lines	%
src/main/java/com/uber/cadence/internal/common/StartWorkflowExecutionParameters.java	13	64.15%

Totals
Change from base Build 2643:	-0.001%
Covered Lines:	15570
Relevant Lines:	19391

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💛 - Coveralls