qtest/numa-test: Use detailed -smp CLIs in pc_dynamic_cpu_cfg

qtest/numa-test: Use detailed -smp CLIs in pc_dynamic_cpu_cfg

Since commit 80d7835749 (qemu-options: rewrite help for -smp options),
the preference of sockets/cores in -smp parsing is considered liable
to change, and actually we are going to change it in a coming commit.
So it'll be more stable to use detailed -smp CLIs in testing if we
have strong dependency on the parsing results.

pc_dynamic_cpu_cfg currently assumes/needs that there will be 2 CPU
sockets with "-smp 2". To avoid breaking the test because of parsing
logic change, now explicitly use "-smp 2,sockets=2".

Signed-off-by: Yanan Wang <wangyanan55@huawei.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210929025816.21076-8-wangyanan55@huawei.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>