[PATCH] test: enable parallel mode for wal_off tests

[Alexander Turenko]

On Tue, Sep 25, 2018 at 08:10:07PM +0300, Vladimir Davydov wrote:
> On Sat, Sep 22, 2018 at 04:44:17AM +0300, Alexander Turenko wrote:
> > Vova, can you please confirm that memtx_memory option should be
> > increased in the test? I mean confirm that it is the test problem and is
> > not a problem of tarantool itself.
> 
> Looks like this is a bug in Tarantool after all:
> 
>   https://github.com/tarantool/tarantool/issues/3633#issuecomment-424425046

Thanks!

I think the memtx_memory should be increased for this test suite anyway
and more straight test case should be added once the issue will be
fixed.

WBR, Alexander Turenko.