Allow product creation with sdk

[butenkor]

It should be possible to create/update products over SDK. Use cases:

• import products from external systems
• integration tests

[schleichardt]

It is unlikely that we will implement it for the old SDK. Especially since the effort is enormous. You can already use command line tools to import products.

For the new SDK it is already implemented: http://sphereio.github.io/sphere-jvm-sdk/javadoc/master/io/sphere/sdk/products/package-summary.html#package.description

@lauraluiz What do you think?

[hajoeichler]

We will support this only in the new SDK.

[lauraluiz]

Yep, I agree.