* Deserialization implementation for Constant op.
* Add Cont op implementation for NodeConverter.
* Refactor functional tests, remove Const op from layer and node cretaors.
* Remove Constant op from NodeConverter.
* Refactor smoke test.
* Correct parameter in addBlob function.
* Update Constant op representation for myriad functional tests.
* Correct Const op representation for TopK model test.
* Add changes accroding to review comments.
* Refactor constant test.
* Add review changes.
* Add custom op for testing on_adapter(void*).
* Correct library path.
* Correct test fixture class for custom op test.
* Apply review remarks, remove creators from DeconvolutionIE.
* Refactored test ReadCustomAddConstNetwork, corrected on_adapter().
* Remove on_adapter() for CoordinateDiff which is specific to Convolution op.
* Apply review remarks.
* Apply teview remarks.
* Correct Const op in non_max_suppression tests.
* Resolve conflicts after rebase.