Issue Description

While using model.bulkCreate, as we pass the options, an object which contains transaction, it comes modified after the execution

What are you doing?

We have called bulk

Now only memtx spaces can be temporary. Support of vinyl temporary spaces should be added in scope of #1785. However, now it is possible specify vinyl engine alongside with 'temporary' option:

box.schema.space.create('temp', {temporary=true}, {engine = 'vinyl'})
---
- engine: memtx
...

As one can see, vinyl engine is ignored and created space anyway uses memtx. I suggest to raise an

Benchmarks and features make it sound promising for our workloads. AWS runs exclusively on Intel hardware, so we'll be able to make use of the CPU-specific optimizations in Clear Linux. We'll need to verify that Pan