oeqa/runtime/dnf: Fix test error when static libs are enabled

oeqa/runtime/dnf: Fix test error when static libs are enabled

The test works by excluding curl-dev which curl-staticdev depends upon.
When static libraries aren't disabled, this leads to an odd looking test
failure.

Simply exclude curl-staticdev as well in case its enabled to make sure
the test always works.

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Armin Kuster <akuster808@gmail.com>