Add dataset validation for sync push command#241

Draft

DechengMa wants to merge 3 commits intomasterfrom sync-func-error-handling

+78-2

Commits on Oct 12, 2020

Add error throwing and handling in sync command operations
DechengMa
committed
Add tests for TestFlightProgramDifference duplicateTester error throwing
DechengMa
committed
fix lint issue in TestFlightProgramDifferenceTests
DechengMa
committed