Revision components related model.gans.pix2pix

[Jungwon-Lee]

What does this PR do?

Part of #839

pl_bolts.models.gans.pix2pix.components.DownSampleConv
pl_bolts.models.gans.pix2pix.components.Generator
pl_bolts.models.gans.pix2pix.components.PatchGAN
pl_bolts.models.gans.pix2pix.components.UpSampleConv
pl_bolts.models.gans.pix2pix.pix2pix_module._weights_init
pl_bolts.models.gans.pix2pix.pix2pix_module.Pix2Pix

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Did you have fun?

Make sure you had fun coding 🙃

[Borda]

@Jungwon-Lee how is it going here? 🐰

[otaj]

I don't want to be seeing this in my list of reviews anymore, so, I'm approving :D

How are you guys doing?