Enable GAN networks benchmarking (#1065)
Enable GAN networks benchmarking (#1065)

* Added benchmarking function for GAN networks

* remove detailed layers info

* remove empty keys cleanup

* Added assert for checking if generator/discriminator iterations have run correctly

* Change assert string, fix variable assigment

* Modified assert string

* Added more information on assert

* Assert change

* Change default number of iterations for time_gan(..)

* Bump Intel Neon benchmark version

* Added new line at the end of file

* Moved assert before benchmark execution rather than after.

NervanaSystems/neon,NervanaSystems/neon,NervanaSystems/neon,NervanaSystems/neon