Added standard unit tests for SqsQueue and SqsJob which are compatible with 4.1+
Merge pull request #3777 from dcarrith/adding_sqs_unit_tests_4.1.x

Adding sqs unit tests to the 4.1.x branch
Remove broken community tests.
return void if nothing was updated on the model

Signed-off-by: Suhayb El Wardany <me@suw.me>
Merge pull request #4813 from suwardany/bugfix/model-performUpdate

[bugfix] Fixes a bug introduced by #4773
Merge branch '4.1' into 4.2