fix type while create table with UUID column

This PR is inspired by [this](https://github.com/playframework/play-slick/issues/203) issue.

I'm not sure it's necessary to do it at all, but if it's relevant, then I can make backports to any branches you would tell.

Also if something is missing, I'm glad to fix it.

Thanks in advance.

Cheers, Nick.
I was following by [this](https://github.com/slick/slick/blob/2.1-no-bin-compat/slick-testkit/src/main/scala/com/typesafe/slick/testkit/tests/JdbcTypeTest.scala#L135-L138) example. Basically, I was trying to test somehow `t2.ddl.createStatements` output.